Calculate the surface area of each of the following geometric shapes (picture is here)

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.!

Prove that 16^4-2^13-4^5 is divisible by 11.

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?