Four pounds of almonds cost $30, 7 pounds of almonds cost $52.50, and 12 pounds of almonds cost $90. Which equation gives the total cost y of
x pounds of almonds?

Can any one me with the answers to these questions asap?

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 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