Simplify:
(3y)^4 (times) y^-2
a) 1/2y^2
b) 3y^2
c) 1/81 y^2
d) 81 y^2

Can any one me with the answers to these questions asap?

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!