Solve:

x=9

Step-by-step explanation:

To simplify the expression, using only exponents:

7^((x/2)-x^(1/2)) = 7^(3/2)

x/2-x^1/2=3/2

x-2x^1/2-3=0

(x^1/2-3)(x^1/2+1)=0

x^1/2=3 as x^1/2=-1 does not have a real solution

x=9

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