IF YOU GET IT RIGHT

you just have to find the GCF

1) 15abc² and 25a³bc
2)12x⁵y and 32x⁶y
3)17pqr and 51pqr³
4)7x² and 21x
5)6x², 18x, and -12
6)4x² and 9x
7)11x²y², 33x²y and 3xy²
8)16a²b,24ab and 16b
9)49s²t² and 36s²t²

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?