Mary used addition of two rational numbers to solve a problem john used subtraction to solve the same problem. is it possiblr they both solved the problom correctly?

Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years