6 miles.
3 miles per hour times 2 hours.
3 x 2 = 6.
f(x+1) = 16(x+1)² - (x+1) = 16(x²+2x+1) - x - 1
= 16x² + 32x + 16 - x - 1 = 16x²+31x+15
so
f(x+1)-f(x) = 16x²+31x+15 - (16x² - x)
= 16x²+31x+15 - 16x² + x
= 32x + 15
Answer:
x = 20
Step-by-step explanation:
For the lines to be parallel, the angles have to be equal
2x+15 = 55
Subtract 15 from each side
2x+15-15 = 55-15
2x = 40
2x/2 = 40/2
x = 20
A great time to apply the quadratic formula
for a quadratic equation
Ax^2 + Bx +C =0
then
