Question

On day 1 of state fair Austin sold 15 handmade chairs. In each of the next 9 days he sold 5 chairs write the equation for how many chairs he sold in standard form

Answer 1

To calculate how many chairs he sold:

He sold 15 on the first day, and each of the next 9 days he sold 5 chairs, then:

Since he sold 5 chairs/day, the slope of the line is 5, so:

f(x)=15+5x