1/2 a dozen pineapple are $50 dollars . mavis purchased 2 1/2 of pineapples how much money did she spend

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.