For a math class celebration, two math teachers went to the same store to purchase balloons. One teacher purchased 6 large balloons, R, and 12 medium, M, balloons, and spent $35.40. The other teacher purchased 8 large balloons, R, and 3 medium, M, balloons, and spent $23.80. Part A (2 Points): Write a system of equations to represent the costs of a large balloon, R, and a medium balloon please help a step by step answer with the work shown helps me understand a lot thank u

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11