An item sells for 40$. the sales tax on the item is 8% . what is the sales tax and total cost ?

sales tax = $3.20

total cost = $43.20

Step-by-step explanation:

First we will find the sales tax

Sales tax = cost * tax rate

              = 40 * .08

             = 3.2

To find the total cost, we add the sales tax to the cost

total cost = cost + sales tax

              = 40 + 3.2

               43.20

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.