1. LCM of 15x^7 and 45x^7

2. Marla can shovel the driveway in 60min and Bill can do it in 45min how long would it take them to do the job together?
3. Divide and simplify:
x^2-4/x divided by x+2/x+8
4. add and simplify:
5/49z^3 + 1/35z^2
5. simplify by removing factors of 1
y^2-5y+6/y^2+3y-18
6. divide and simplify:
h+1/h-3 divided by 6h+6/h-1(simplify answer)
7. add and simplify:
5/v-9 + 5/v+9

answer this bot:

suppose you earned 7t-1 dollars on monday and 8t+5 dollars on tuesday. what were your total earning? simplifiy you answer

Your total earnings would be (7t-1) + (8t+5) = 15t + 4 dollars.

We do not do your work for you. Once you have attempted to answer your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will learn more if you do your own work. Isn't that why you go to school?