Katie selling lemonade for $1.50 per cup she decides to put them on sale for $.90 what percent discount did she give on her lemonade

Ineed i been stuck on this question since yesterday

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96

Item 1 solve for s. s+24=90 −114 −66 66 114