3. Sally invested $5,000.00 in a savings account earning 3.49% simple interest. At the same time Jon invested $3,000.00 in a money market account at a simple interest rate of 7.5%. How many
years will it take for the two to have the same amount of money in their accounts? How much
money do they have after that time period?

How do you solve a question like this?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.