Answer:
<em>f(x) = 2(x + 2)(x - 3)(x - 4) or</em>
<em>f(x) = 2x^3 - 10x^2 - 4x + 48</em>
Step-by-step explanation:
If a cubic function has zeros a, b, c, then its equation is
f(x) = k(x - a)(x - b)(x c)
f(x) = k(x - (-2))(x - 3)(x - 4)
f(x) = k(x + 2)(x - 3)(x - 4)
f(5) = k(5 + 2)(5 - 3)(5 - 4)
f(5) = k(7)(2)(1)
f(5) = 14k
We are told f(5) = 28, so we set 14 equal to 28 and solve for k.
14k = 28
k = 2
f(x) = 2(x + 2)(x - 3)(x - 4)
f(x) = 2x^3 - 10x^2 - 4x + 48
Answer:
1: 87.96in
2: 109.96in
3: 21.99in
Step-by-step explanation:
Y=-x^2+6x-8 is the y-intercept. so you know that. look up the definitions to vertex, symmetry, and direction of opening and go from there. any questions?
Answer:
Step-by-step explanation:
63÷9=63/9=7