Agroup of scientists studied the effect of a chemical on various strains of bacteria. strain a started with 6000 cells and decreased at a constant rate of 2000 cells per hour after the chemical was applied. strain b started with 2000 cells and decreased at a constant rate of 1000 cells per hour after the chemical was applied. when will the strains have the same number of cells? explain.

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.