If the item was marked up by 1/2 before it was placed on the sales floor, what was the price that the store paid

Which expression is equivalent to 2x^2+7x+4?

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?