Consider the expression - 6 3/5 -(-7 4/15) +2 1/5

a. Estimate the value of the expression. Show your work.

b. Find the exact value of the expression. Show

your work.

C use your estimate to explain if your answer to problem 4b is reasonable

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Jaxon has s packs of 8 crazy straws. he divided the crazy straws into 2 equal bags. now, he has 224 crazy straws in each bag. how many packs of crazy straws did jaxon start with?