Ahotel charges an intial check-in fee of 30$, plus 40$ for each day the room is booked. how many days must the room be booked for the average cost per day fall to $45?

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12