Step-by-step explanation: because W in the equation is the number of weeks she paid for the self defense class. and the 12.50 would be the registration fee because that is added on top of the number of 40w.

40w + 12.50 = 492.50

-12.50 -12.50

40w = 480.00

w = 12 which is how many weeks she paid

5 0

2 years ago

Calculate the average rate of change for the given graph from x = –2 to x = 0 and select the correct answer below.

Gwar [14]

$\frac{6-0}{0+2} = \frac{6}{2} =$
3

The equation you use to find the average rate of change, or slope, is $\frac{y_{2}-y_{1}}{x_{2}-y_{1}}$

7 0

3 years ago

Read 2 more answers

Determine the range of values of k such that the equation x²-4kx+4k²+5k+7 = 0 has real roots. ​

Determine the range of values of k such that the equation x²-4kx+4k²+5k+7 = 0 has real roots.