Use the model to find the missing number in the pair of
equivalent expressions.
15 + 9 = ?(5+3)
What number is missing from the expression?

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?