Do multiplication first than divide
first add an than subtract
Answer:
D
Step-by-step explanation:
Zeroes mean the amount of times the graph has touched the x-axis
Let the middle child be x
youngest child = x - 1
Oldest child = x + 1
(x - 1)^2 = 8(x + 1) + 4
x^2 - 2x + 1 = 8x + 8 + 4
x^2 - 10x - 11 = 0
(x - 11) * (x + 1) = 0
X = - 1 makes no sense. How can a middle child be - 1 years old?
x = 11
The youngest child is 10
The middle child is 11
The oldest child is 12
Check
=====
10^2 = 100
(8*12) + 4
96 + 4 = 100 So the results have been checked.
Answer:
The final cost for him is;

Explanation:
Given that the ipod costs $220;

The store gives a 35% discount, which means he will only pay 65% of the original cost;

The store price is;

Also he will need to pay additional 8% sales tax on the discounted price P;

The final cost he need to pay is the sum of the discounted price and the sales tax;

Therefore, the final cost for him is;
N^2 y^2
n squared and y squared