Answer:

Step-by-step explanation:
The expression that we have in this problem is

First of all, we proceed by evaluating the power of the term in the brackets. We apply the rule:

So

Moreover, we have

Therefore,

So now the expression is

Now we apply the following rule:

So we have

Therefore, our expression becomes:

Answer:
y = -9
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
pi*r²=616
22×r²=616×7
r²=4312/22
r=14
now
2piR=2×22/7×14
=88
Answer:
18x - 12
Step-by-step explanation:
multiply each term in the parenthesis by the 6 outside ( distributive law)
6(3x - 2)
= (6 × 3x ) + (6 × - 2) = 18x +(- 12) = 18x - 12