Allen worked for 7 hours on Saturday at the grocery store Allen dad paid him $8.00 for washing his car how much money does Allen make per hour at grocery store? Need ASAP

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

Aline passes through 3,7 and 6,9 what equation represents the line

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.