By the way this is not my work

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base