Find each measure if m< 1 = 31°

What is the measure of angle afe? 79 81 91 99

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

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25