Which systems below would be most easily solved using the substitution method?

A. 5x + 7y = 45

2x - 7y = - 14

B. 2m - 3n = - 2

m + 4n = 24

C. 2x = - 3y + 4

x = 2y - 5

D. 7x + 2y = 16

-21x - 6y = 24

Maria ate 1/3of a pie. Her sister, rebecca, ate 1/5of that. what fraction of the whole pie did rebecca eat?

What is the inverse of y = 2x - 4?

A marching band 8-to - 5 step covers 5/8 yd per step. How many yards does a band member move across the football field if he or she takes 30 1/2 steps? 5/8⋅30 1/2= Express your answer as a fraction in simplest form.

Elina's friend Luke said that he could make more rectangles with 24 tiles then Elaine's 10 tiles do you agree with Luke's explain

X+y=5 what is the value of the function when X=4

A city lot measures 100 feet x 250 feet. The city zoning ordinance specifies that maximum lot coverage is 40% of the lot. What is the maximum size for a building on this lot?

Find the quotient. 8,489:9

Divide £10 into the ratio 2 : 3

Line m and p are perpendicular. If the slope of line m is - 3, what is the slope of line p?

Evaluate the expression when c=-5 and y = 5 - 4c+y