Suppose the weight of a 2-year-old is 28 pounds. When the child is 5, he weighs 58 pounds. Determine a linear function that can be used to predict the child's weight (W) when his age (a) is unknown.

The percent of births to teenage mothers that are out-of-wedlock can be approximated by a linear function of the number of years after 1955. The percent was 19 in 1974 and 71 in 2010. Complete parts (a) through (c). (a) What is the slope of the line joining the points (19,19) and (55,71)? The slope of the line is (Simplify your answer. Round to two decimal places as needed.) (b) What is the average rate of change in the percent of teenage out-of-wedlock births over this period? The average rate of change in the percent of teenage out-of-wedlock births over this period is needed.) (c) Use the slope from part (a) and the number of teenage mothers in 2010 to write the equation of the line. The equation is p = (Do not factor. Type an expression using x as the variable.) D O 58 I ♫ tv (Simplify your answer. Round to two decimal places as SA ال / Next

the operating expesnes of amazon increased from 3.6 billion in 2008 to 16.3 billion in 2012. use the information to find a linear model for amazons operating expesne E as a function of time t in years since 2010

Your starting salary is $40000 and it increased by $10675 over the next seven years. Let t be years and s your salary, and your salary is a linear function of time. Find a formula for your salary in time years.

Assume a cars depreciation value can be modeled by a linear function where y represents the cars value after t years. If the car was worth $1200 after 2 years and worth $300 after 5 years:  a. How much did the car depreciate each year? b. How much was the car worth when it first debuted? c. Write an equation that models the cars value as a function of time d. When will the car have no value?

3. Determine if the data is linear or exponential and find a function that models the data: -4 -2 0. 2 4 y 0.625 2.5 10 40 160

Suppose that the number of tee shirts sold (N) depends linearly on the price charged (x). Write an equation showing this dependence.

Suppose f(-3) = -8 and f(-1) = 2. Determine the linear function represented by these values.