Find the sum of the first nine terms of the geometric series 8, −24, 72, … −19,6893
19,691
39,368
52,488

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

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! )

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.