Pablo is making ramps of different lengths. The ramps are made with rectangular and square wooden boards. The relationship between the length of the ramp in feet, f(n), and the number of square boards used, n, is represented by the function below.

f(n) = 20n + 3 , where 2 ≤ n ≤ 6

Which statement is correct about the range of the length of the ramp for the given domain?

It varies from 2 to 6.

It varies from 43 to 123.

It varies from 40 to 120.

It varies from 2 to 123.

My answer is It varies from 2 to 6.

Am I right? :)

Question

Pablo is making ramps of different lengths. The ramps are made with rectangular and square wooden boards. The relationship between the length of the ramp in feet, f(n), and the number of square boards used, n, is represented by the function below. 

f(n) = 20n + 3 , where 2 ≤ n ≤ 6 

Which statement is correct about the range of the length of the ramp for the given domain?

 It varies from 2 to 6.

 It varies from 43 to 123.

 It varies from 40 to 120.

 It varies from 2 to 123.

My answer is It varies from 2 to 6.

Am I right? :)

jim_thompson5910 · Answer

f(n) = 20n + 3

f(2) = 20(2) + 3

f(2) = 40 + 3

f(2) = 43

The smallest output possible is 43

jim_thompson5910 · Answer

To find the largest output possible, plug in the largest input possible

anonymous · Answer

which would be 123?

jim_thompson5910 · Answer

yep

jim_thompson5910 · Answer

smallest output possible: 43

largest output possible: 123

So the range is 43 to 123

anonymous · Answer

It varies from 40 to 120.