4-1 Graphing Equations In Slope-Intercept Form Worksheet

4-1 Graphing Equations In Slope-Intercept Form Worksheet - Cognero Page 4

4-1 Graphing Equations in Slope-Intercept Form

c. 3112 manatees

50. TRAVEL A rental company charges $8 per hour for a mountain bike plus a $5 fee for a helmet.

a. Write an equation in slope-intercept form for the total rental cost C for a helmet and a bicycle for t hours.

b. Graph the equation.

c. What would the cost be for two helmets and 2 bicycles for 8 hours?

ANSWER:

a. C = 8t + 5

c. $138

51. CCSS REASONING For Illinois residents, the average tuition at Chicago State University is $157 per credit hour.

Fees cost $218 per year.

a. Write an equation in slope-intercept form for the tuition T for c credit hours.

b. Find the cost for a student who is taking 32 credit hours.

ANSWER:

a. T = 157c + 218

b. $5242

60. MAGAZINES A teen magazine began with a circulation of 500,000 in its first year. Since then, the circulation has

increased an average of 33,388 per year.

a. Write an equation that represents the circulation c after t years.

b. What does the slope represent?

c. What does the c-intercept represent?

d. If the magazine began in 1944, and this trend continues, in what year will the circulation reach 3,000,000?

ANSWER:

a. c = 33,388y + 500,000

eSolutions Manual - Powered by Cognero

Page 4

b. t he increase in circulation each year

4-1 Graphing Equations In Slope-Intercept Form Worksheet - Cognero Page 4