Please help with these questions

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3