X^2 - 9 = 16
Solve for x

X = ±5

Step-by-step explanation:

X^2 - 9 = 16

Add 9 to each side

X^2 - 9+9 = 16+9

X^2  = 25

Take the square root of each side

sqrt(X^2 ) =±sqrt(25)

X = ±5

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b