Answer:
1/10
Step-by-step explanation:
1 dollar=100 cents
10 cents = 10/100
simplify 10/100 by dividing the numerator and denominator by 10
Ans. = 1/10
f(x) = 2x^2 - x - 10
Part A:
x-intercepts: (-2,0), (5/2,0)
Part B:
The vertex is the minimum
vertex: (1/4, -81/8)
Part C:
A:
x: -2, -1, 1/4, 1, 2
y: 0, -7, -81/8, -9, -4
B:
Answer: choice #2, or −3(x − 1)(x − 3)(x + 4)
Explanation:
The first three points are zeros (or roots) of the polynomial (1, 0), (3, 0), (−4, 0).
They imply factors (x-1), (x-3) and (x+4) and can be easily check against the factorized forms in the four choices. They allow us to narrow the choices to the first two.
Then we use the point (0,36), setting x=0 to determine the value y. In the first choice the value is -36, in the second choice it is 36, therefore the answer is choice #2.