2ab + a^3 +5a^2b^2 - 2b^3
Need help i have to write this in standard form

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Which of these tables represents a non-linear function?

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?