Find the unknown number in the following proportion. round your answer to the nearest hundredths if necessary check your answer by finding the cross products

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}