Well for every ten packs Jason paid $16 ($64/4). If he charges his friend what he was charged, he would charge $16 for 10 packs :)
Okay. I used to struggle with this one too sweetie. First off, you are using multiplication, when two numbers are close together it means they need to be multiplied. You are also using addition which means you can add the exponents together. In this case, it would equal x to the power of nine. Then add 12 and 35 which equals 47. So the equation is 47 multiplied by x to the power of nine.
4|x - 1| - 7 = -3 |add 7 to both sides
4|x - 1| = 4 |divide both sides by 4
|x - 1| = 1 ⇔ x - 1 = 1 or x - 1 = -1 |add 1 to both sides
x = 2 or x = 0
Answer: B.
€ = 7/9
7/9÷2 = .389
C = 2pi•r = 2•pi•18 = 36pi
WV = 7/9 (36pi) = .389 (36)pi = 14pi
So C) 14pi is the answer