Answer:

Step-by-step explanation:
49/28 is 7/4
Applying the inverse law
u^2-6
u^-4
therefore 
Answer:
B
Step-by-step explanation:
2(x-4) = 2x - 8
Answer:
25
Step-by-step explanation:
a² + 7a + 7
a = 2
Plug in the value of 2 for every occurance of a.
(2)² + 7(2) + 7
First, solve the exponent.
4 + 7(2) + 7
Now, multiply.
4 + 14 + 7.
Add.
25
This is your answer.
Hope this helps!
Answer:
m=7
b=4
Step-by-step explanation: