Hey, I'm having some trouble here. Could someone let me know what the answer is? Thanks a ton!

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm

How can a bar model be used to solve for the unknown variable in the equation below? show your work model and then solve. 2/5n-7=9 1/4