Please help! no rush though :) 1.6 x 10^5kg and 8 x 10^3kg

(i need it with too but if you can’t it’s all good!)

If square root x = -7, then x= -49 true or false

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

How many terms does the polynomial x^2 y^2 have