Colin is painting figurines. he spends 20 minutes painting each figurine. after painting for 60 minutes, he still has 9 more figurines left to paint. the number f of figurines left to paint is a function of t, the amount of time in minutes colin spends painting. write the functions formula

Step-by-step explanation:

To solve this problem we must pay attention to the following data supplied:

- f It is the number of figurines that remain to be painted.

- t amount of time, in minutes, that Colin spends painting

- Colin takes 20 minutes painting each figurines.

- After painting 60 min, he still has 9 figurines left. f (60) = 9

If he takes 20 minutes painting 1, it means that in 60 minutes he has painted 3 and he has 9 left.

Then, at the beginning he has 9 +3 figurines to be painted.

With these two points we can find the function:

If m is the slope of the line, then:

Where by definition

Finally the formula is:

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

nada

step-by-step explanation: