Concept explainers
Sarah wants to arrive at her friend’s wedding at3:00. The distance from Sarah’s house to the weddingis 95 miles. Based on usual traffic patterns, Sarahpredicts she can drive the first 15 miles at 60 miles per hour, the next 10 miles at 30 miles per hour, and the remainder of the drive at 70 miles per hour.
(a) How long will it take Sarah to drive the first 15 miles?
(b) How long will it take Sarah to drive the next 10 miles?
(c) How long will it take Sarah to drive the rest of the trip?
(d) What time should Sarah leave her house?
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Elementary Algebra
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