Completely factor the expression 7x² + 21x.
which one is it?
3 (x² + 7)
(2x + 7) (x + 3)
2 (7x + 21)
7x (x + 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

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart