10. Mr. Ward bought a used car forx dollars. One year later the value of the car was 0.72x. Which
expression is another way to describe the change in the value of the car?
A 0.28% decrease
B 0.72% decrease
C28% decrease
D 72% decrease

D.

Step-by-step explanation:

0.72 = 72%

So that being the case, his car's value decreased by 72%

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)

its an acute right triangle

step-by-step explanation: