Calculate the area of each shape below. show your work

The answer to your question is:

a) 33 u²

b) 30 u²

Step-by-step explanation:

a)

Here there is a rectangle and 2 triangles

Rectangle area = base x height

                         = 7 x 3

                         = 21 units²

Triangle area = (base x height) / 2

                      = 4 x 3 / 2

                     = 12/2

                     = 6 units²

Total area = 21 + 6 + 6

                 = 33 units²

b)

Rombus area = base x height

                      = 6 x 5

                      = 30 units²

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.