? • (-10) = 90

I need a little help. If you can also explain that would help as well.

For each proportion find the unknown number x 1/5/8=×/15

Which expression gives you the distance between the points (5,1)and(9,-6)

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