If Chris eats cookies at a rate of 5 cookies every 2 minutes, will he finish all 19 of them in 7 minutes before his parents come home?

no

Step-by-step explanation:

Chris' Ratio/Rate : 5cookies:2minutes

Find the unit rate: cookies per minute

5/2=2.5

Chris eats 2.5 cookies per minute

Now, to find out if he would finish all 19 of them in 7 minutes, multiply 2.5 by 7.

2.5 x 7 = 17.5

So the answer would be No, Chris could not finish all of the cookies in time.

he would have 1.5 cookies left over