9% tax on a $59.99 purches what's is the sales tax?

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

Can someone me and plz do the problem

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3