3. which equation has a constant of proportionality of 2?
a. y=x+2
b. y = x - 2
c. y=2x
d. y=1/2x

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form