Answer:
The angle z is 130 degrees.
Step-by-step explanation:
A straight line is 180 degrees.
Now think about how that line looks, you cut 50 degrees off of the whole 180.
So the equation is 180-50=z
z=130
I hope I have been of assistance to you, have a good day.
Answer:
The expression is equal to 
Step-by-step explanation:
Let
x ----> the number of hours that the roller blades are rented
y ----> the cost of renting roller blades in dollars
we know that
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value of the linear equation
In this problem we have
The slope is equal to

The y-intercept is equal to
----> value of y when the value of x is equal to zero
substitute

For x=h hours
substitute
