3(2x + 4y -15z) (pls help qwq)

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

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.!

Ithink i know it but i want to be sure so can you me out ?