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In a lab, the temperature of various chemical reactions is changing by a fixed number of degrees per minute. Write a numeric expression that describes each of the following if all times are on the same day. Complete parts (a) through (d) below. a. The temperature at 8:00 P.M. is 28°C. If it drops 2°C per minute, what will the temperature be at 8:20 P.M.? The temperature will be - 12 °C at 8:20 P.M. b. The temperature at 8:20 P.M. is 3°C. If it has dropped 1°C per minute, what was the temperature at 7:55 P.M.? The temperature was 28 °C at 7:55 P.M. c. The temperature at 8:00 P.M. is 12°C. If it has dropped 1°C per minute, what was the temperature at 7:40 P.M.? The temperature was 8 °C at 7:40 P.M. d. The temperature at 8:00 P.M. is 23°C. If it has been increasing every minute by 1°C, what was the temperature at 7:40 P.M.? The temperature was °C at 7:40 P.M.

In a lab, the temperature of various chemical reactions is changing by a fixed number of degrees per minute. Write a numeric expression that describes each of the following if all times are on the same day. Complete parts (a) through (d) below. a. The temperature at 8:00 P.M. is 28°C. If it drops 2°C per minute, what will the temperature be at 8:20 P.M.? The temperature will be - 12 °C at 8:20 P.M. b. The temperature at 8:20 P.M. is 3°C. If it has dropped 1°C per minute, what was the temperature at 7:55 P.M.? The temperature was 28 °C at 7:55 P.M. c. The temperature at 8:00 P.M. is 12°C. If it has dropped 1°C per minute, what was the temperature at 7:40 P.M.? The temperature was 8 °C at 7:40 P.M. d. The temperature at 8:00 P.M. is 23°C. If it has been increasing every minute by 1°C, what was the temperature at 7:40 P.M.? The temperature was °C at 7:40 P.M.

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter1: Introduction To Algebra
Section1.1: Variables
Problem 37WE
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In a lab, the temperature of various chemical reactions is changing by a fixed number of degrees per minute. Write a numeric expression that describes each of the following if all times are on the same day. Complete parts (a) through (d) below. a. The temperature at 8:00 P.M. is 28°C. If it drops 2°C per minute, what will the temperature be at 8:20 P.M.? The temperature will be - 12 °C at 8:20 P.M. b. The temperature at 8:20 P.M. is 3°C. If it has dropped 1°C per minute, what was the temperature at 7:55 P.M.? The temperature was 28 °C at 7:55 P.M. c. The temperature at 8:00 P.M. is ¯ 12°C. If it has dropped 1°C per minute, what was the temperature at 7:40 P.M.? The temperature was 8 °C at 7:40 P.M. d. The temperature at 8:00 P.M. is 23°C. If it has been increasing every minute by 1°C, what was the temperature at 7:40 P.M.? The temperature was °C at 7:40 P.M.
Transcribed Image Text:In a lab, the temperature of various chemical reactions is changing by a fixed number of degrees per minute. Write a numeric expression that describes each of the following if all times are on the same day. Complete parts (a) through (d) below. a. The temperature at 8:00 P.M. is 28°C. If it drops 2°C per minute, what will the temperature be at 8:20 P.M.? The temperature will be - 12 °C at 8:20 P.M. b. The temperature at 8:20 P.M. is 3°C. If it has dropped 1°C per minute, what was the temperature at 7:55 P.M.? The temperature was 28 °C at 7:55 P.M. c. The temperature at 8:00 P.M. is ¯ 12°C. If it has dropped 1°C per minute, what was the temperature at 7:40 P.M.? The temperature was 8 °C at 7:40 P.M. d. The temperature at 8:00 P.M. is 23°C. If it has been increasing every minute by 1°C, what was the temperature at 7:40 P.M.? The temperature was °C at 7:40 P.M.
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