Question

Please help me on the full page

Answer 1

1.

Part A.

bh + hr = 25

h( b + r ) = 25

h = 25/ b + r

Part B

hr = 25 - bh

r = (25 - bh)/h

r = 25/h - b

2.

Part A.

xy = r - h

-h = -r + xy

divide both sides by -1

h = r - xy

Part B

xy = r - h

xy + h = r

r = xy + h

3.

4x - 2y = 8

-2y = 8 - 4x

divide through by -2

y = 8/-2- 4x/-2

y = -4 + 2x

therefore Camille solved the equation correctly

4.