Mary spent the first 12 miles of her road trip in traffic. When the traffic cleared, she was able to drive twice as fast for the remaining 30 miles. If the total trip took one hour, what was her
average speed in traffic?
PLEASE ANSWER QUICKLY

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

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Me asap! what is the slope of this line? enter your answer in the box.