Ian picked up 16 red cars and 12 black cars from the floor of his room. he put the same number of each color car into 2 boxes. how many cars did he put in each box?

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?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

16x^2-16x=5 solve the equation by completing the square