Answer:
A.) 7,200
Step-by-step explanation:
40
The area of a rectangle is length*width. So, 200=8(1/2x+5). Dividing by 8, 25=1/2x+5. Subtracting 5, 20=1/2x, multiplying by 2, 40=x.
-120 , split it into diferent parts.
12 (52) - 12 (62) = ?
12 x 52 = 624
12 x 62 = 744
624 - 744 = -120