Jack is selling wristbands and headbands to earn money for camp. he earns $2 for each wristband and $3 for each headband. he wants to earn at least $50 dollars. he needs to sell at least five wrist bands. draw a graph of the solution of systems.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

I’m still confused on how to work the percentages