First you do 3 to the 2nd power which is 9 then you just add 12+9+50= 71
19y-9 is a simpler form of this expression. You can use distributive property to get rigid the brackets (multiply -3 by -4y and 3) , then your expression looks like 12y-9+7y. You then combine like terms to get 19y-9.
Volume of his pool=290
Time taken =10
290gallons/10hours taking the 0’s from both sides
=29gallons/hour
Answer:
A
Step-by-step explanation:
Because the cost per pie is less.
