Combine like terms for
(3x²+2x²-5x+7)+(4x²+2x-3)

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

I’m stuck on this equation, anyone got the answer?

What is r i 4.5+10r=-6.5 with work pls