A student's incorrect attempt to simplify the exponential expression is shown. mạmb = (mn)
What is his mistake?
O He should have subtracted the exponents.
O He should have multiplied the exponents.
O He should have divided the exponents.
O The expression cannot be further simplified because the bases are different.

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Which statement best describes the polynomial

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.