Answer:
(-7, -10)

Step-by-step explanation:

Substitute x for -7.

Multiply 4 by -7.

Add 28 on both sides.

Divide -4 on both sides.

A parallelogram has two pairs of opposite sides. A trapezoid only has one pair of parallel sides.
Answer:
hmm
Step-by-step explanation:
The answer is 10 as the diameter because it says to estimate pi as 3. Since we know the circumference is 30 we can reverse it to find the diameter, since Circumference is pi time diameter.