Mikayla bought 5 skirts at $x each. Three of the 5 skirts came with a matching top for an additional $9 each. Write and simplify an expression that represents the total cost of her purchase.
So Mikayla bought 5 shirts for $x dollars each this part of the expression we can call 5x then 3 of the shirts came with an additional $9 each. 9x3=27 so the expression is 5x+27