Crystal opened a new package of stickers. She gave 6 stickers to each of her 3 friends. She has 12 stickers left for herself. How many stickers were in the package?
A. 6
B. 20
C. 21
D. 30

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2