Answer:
Yes, John did write his systems of equations correctly.
Step-by-step explanation:
FedEx charges him a flat rate of $5, so the 5 stands alone in the problem, and $0.50 per pound, so the 0.5 stands with the x because it represents each pound.
UPS doesn't charge him a flat rate so there is no stand-alone number. Since they charge $2 per pound, 2 is with the x, again representing each pound.
Answer:
5
Step-by-step explanation:
I think you meant 4(x - 3) + 5x - x^2.
Substituting 2 for x, we get 4(-1) + 5(2) - (2)^2 = -1 + 10 - 4 = 5
Answer:
I assume you meant 4x^2
So the answer in simplified form is -4x^2-11x+3
You find the x coordinates using x = -b/2a = -6/2(-1) = 3
Substitute 3 in the equation and find y
y = -(3^2) + 6(3) - 12 = -9 + 18 - 12 = -3
Vertex (3,-3)