Abook store is hosting a special night in which families can enjoy a story and craft time. tickets to the event must be bought ahead of time and are $1.50 for children and $2.50 for adults. so far, 45 children's tickets have been sold, which is 60% of the total tickets sold. how many tickets have been sold so far? show or explain how you got your answer.

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer