X - $5 bills
y - $10 bills
x + y = 12
y = 5x
x + (5x) = 12
6x = 12
x = 2
y = 5(2)
y = 10
10 $10 bills and 2 $5 bills
Answer: 198 ft^2
total Area = Area of rectangle + area of trapzoid
= base*height + .5(b1+b2)*height
9*18+.5(9+3)6
162+36
198
-58c=20 isolate variable with equal treatment using opposite operation
opposite of -58 x c is division, so divide both sides by -58
-58c/-58 = 20/-58
-58 over -58 = 1 so
1c = 20/-58
c = -0.3448275 Round to nearest hundredth = -0.34
