PLZZ HELP I NEED TO FINISH THIS IN 8 MINS

Plz hurry evaluate the expression a+b where a=8 and b=19

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?

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?