Answer:
168 feet
Step-by-step explanation:
area of trapezoid = length (a)+ breadth(b) / 2 height
Line equation is
y - y1 = m * (x - x1)
y - (-7) = (-5) * ( x - 1)
y + 7 = -5x + 5
y + 5x + 2 = 0
2+3·4 PEMDAS
1) multiplication- 3·4=12
2+12
2)addition
2+12=14
answer is 14