Solve. If there is more than one solution, separate them with a comma.
- 8 - 7| - 4x - 4| = 6

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?