Answer:
4x2+5x2-2x+8x=9x2+6x
Step-by-step explanation:
Answer:

so B is the answer 
Step-by-step explanation:

6x+12y-6z+7x7y-28z= 13x+19y-34z
Answer: 20
Step-by-step explanation:
Given
The cost of an individual ticket is $25
The cost of a couple's ticket is $40
The total sale is $2500
total ticket sold is 70
Suppose there are x individuals and y couples


So, they sold 20 tickets of the individual.