What is 7 5/9 minus 3/ 2/15

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.