22. The table below shows the cost of shirts from A-better Design. What is the linear function for the cost of shirts from A-better Design? *

|___# of shirts|__10__|__20___|__30__|__40__ |
|___total cost ($) |__70__|__125__|__180__|__235__ |

A. y=5.50x+15
B. y=7x
C. y=5x+20
D. y=6x+10

You have to put an explanation for your answer to recieve full 30 points

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation: