A store prices electronics and accessories at a 45% markup rate. If the store purchases headphones for $15, find the retail (selling) price of the headphones.
$21.75
$6.75
$15.45
$16.45

Write the expression 7x^3-28xy^2 as the product of 3 factors

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

What is the surface area of a cube with the volume of 729 ft?