Answer:
see explanation
Step-by-step explanation:
To find the x- intercepts let y = 0, that is
(x - 4)(x + 2) = 0
Equate each factor to zero and solve for x
x - 4 = 0 ⇒ x = 4
x + 2 = 0 ⇒ x = - 2
x- intercepts are x = - 2 and x = 4
The vertex lies on the axis of symmetry which is located at the midpoint of the x- intercepts, thus
= = 1
Substitute x = 1 into the equation for corresponding value of y
y = (1 - 4)(1 + 2) = - 3 × 3 = - 9
vertex = (1, - 9)
The expected winning on an $1 ticket would be $0.326 or about 33 cents.
First, we need to find the total of all of the prize money:
1(160000) + 2(20000) + 11(4000) + 21(800) = 260800
Divide this total by the 800,000 tickets and you get 0.326.
Well your going to need 5, since 4 wouldn't be enough, 4 would only be 24.
45. Using order of operations.