What is the volume of the solid generated when the region in the first quadrant bounded by the graph of y=x3, the x-axis, and the vertical line x=2 is revolved about the x-axis?

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )