What are equations that that the answer will be x=31 and x=17

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

What expression is equivalent to 42x-56y

To convert celsius temperatures to fahrenheit, you can use the expression (c + 32). tom says that another way to write this expression is c + 32. what error did tom make?