Parker baked 80 cookies for a bake sale. at the bake sale, 70% of his cookies sold. how many of parker’s cookies were sold?

Determine the quotient and remainder when (6a3)+11a2-4a-9) is divided by (3a-2) express your answer in the form q(a) + r(a)/d(a)

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

With number 11 ( show how you got the answer)