If 7p + 5q = -3, find q when p = 1.

q = -2

Step-by-step explanation:

7p + 5q = -3

=> 7x1 + 5q = -3

=> 7 + 5q = -3

=> 5q = -3 - 7 = -10

=> q = -2

Hi! Let's look at this question. First of all, let's put the question into more understandable terms.

A = 480 + (480 * 1.5)

B = A - (A * 1.5)

The question wants to know, is B = 480.

Break it down.

50% of 480 is 240, so A = 480 + 240 = 720.

A = 720

50% of 720 is 360, so B = 720 - 360 = 360.

B = 360

B =/= 480, so the final price of the car stereo will not be $480.