Ido not understand how to get the

A

Step-by-step explanation:

Let x ml be the amount of paint color B mixed with 40 ml of paint color A.

In 40 ml of paint color A are 15% of black pigment, so there are

of black pigment.

In x ml of paint color B are 60% of black pigment, so there are

of black pigment.

In total we het x+40 ml of mixture. There are 25% of black pigment that is

Thus,

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 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