Someone please help me with number 4

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c