Use the vertex formula to find the vertex of the quadratic function.f(x) = -3x2 + 12x
A. 
B. 
C. 
D. 
Answer: D
You might also like to view...
Provide an appropriate response.Factor completely: x2 - 9x
A. 9(x - 1) B. x(x - 9) C. (x - 3)2 D. (x + 3)(x - 3)
Solve the inequality graphically, numerically, or symbolically, and express the solution in interval notation. Where appropriate, round to the nearest tenth.
> 4
A. (-?, -0.5) ? (1.2, ?) B. (1.2, -0.5) C. (-?, 1.2) ? (-0.5, ?) D. (-0.5, 1.2)
Write a cost function for the problem. Assume that the relationship is linear.An electrician charges a fee of $55 plus $40 per hour. Let C(x) be the cost in dollars of using the electrician for x hours.
A. C(x) = 40x - 55 B. C(x) = 55x - 40 C. C(x) = 55x + 40 D. C(x) = 40x + 55
Provide an appropriate response.A student tries to solve 
= 
+ 4 by squaring both sides and gets 
Why is this not correct?
What will be an ideal response?