Answer:
2x^2+x-3
The first number is 2x squared, then plus x, then minus 3.
Answer: 26
Step-by-step explanation:
She will need 12 seconds because -20•12=-240
Y-585 = -7.5(x-15)
y = -7.5x - 7.5(-15) + 585
y = -7.5x + 697.50
C = -7.5(52) + 697.50 = $307.50
Perimeter is the sum of the sides.
4x + 6 +3x + 2 = 57
7x + 8 = 57
7x = 49
x = 7