Please answer #30 , #32 , #34 and #40 only ma'am/sir in compound interest. Please show step by step solution sir/ma'am. Thank you.

40. If you have a $700 balance on a credit card that charges 18% interest compounded monthly, how long will it take that amount to reach $2,000 if you don't make any payments?30. In order to pay for college, the parents of a child invest 34. A recent college grad accepts a job but plans to save $20.000 in a bond that pays 8% interest compounded money to go back to grad school in 6 years. She wants to semiannually. How much money will there be in 18 years? have $22,000 saved at that point to help pay for school. 31. A 25-year-old plans to retire at age 50. She decided to How much would she have to invest right now at 54% invest an inheritance of $60.000 at 7% interest compounded compounded quarterly to reach that goal? semiannually. How much will she have at age 507 35. How much would you have to invest into a 5-year To pay for new machinery in 5 years, a company owner certificate of deposit paying 2.3% compounded weekly invests $10,000 at 74% compounded quarterly. How to make it worth $4,500 at the end of the term? much money will be available in 5 years