First you find how many prizes were dolls. Then you subtract that number from 64.
Answer:
I dont see the picture sry
a = total amount invested at 5%
b = total amount invested at 8%
we know 5% was earned in interest from "a", so that'd be (5/100) * a or 0.05a.
we know 8% was earned in interest from "b", so that'd be (8/100) * a or 0.08b.
we also know that the total for both is 1000, a + b = 100.

Answer: True
Step-by-step explanation:
To find the roots, you set each x equal to 0.
x=0
x-1=0
x=1