I need help with 7th Grade Advanced Math. (Systems of Equations)

Choose the correct classification of 3x4 − 9x3 − 3x2 + 6. 5th degree polynomial 4th degree polynomial 9th degree polynomial 24th degree polynomial

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee