On Day 1 of the state fair, Austin sold 15 handmade stools. On each of

the next 9 days, he sold 5 stools. The linear function f(d) can be used to
represent the total number of stools Austin sold, where d is the day of
the fair. Solve the problems below. The first one is done for you.

10. What is the slope of the line representing f(d)?
5
11. Find f(2) and f(5).

12. Write the function f(d) as a linear equation.

1 answer

clearly, f(1) = 15
since he sold 5 stools/day, the slope of the line is 5, so
f(d) = 15+5d for d > 1