Brandy has an 84 homework average, a 91 quiz average, and an 86 final exam average in her Algebra 2 class. If Homework is 40% of her grade, Quizzes are 40% of her grade, and the Final Exam is 20%. What is her class average?

Lian is deciding which of two gyms to join. each gym charges a monthly rate plus a one-time membership fee. lian correctly wrote and solved a system of linear equations by substitution to compare the costs of the memberships. in her work, she substituted an expression for one variable and solved for the other. this resulted in the equation 75 = 75. what can lian conclude? one gym charges $75 per month. each gym charges $75 per month both gyms charge the same monthly rate and the same membership fee. both gyms charge the same monthly rate, but not the same membership fee.