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

After returning from a holiday to the USA, Megan has some American coins: A 25c coins and B 10c coins with a total value of $1.95, where A and B are both counting numbers. how many different values of A can Megan have?

Makayla and Brendan each opened a savings account with the deposit of $100. -Makayla earned 2.5% simple interest per year. -Brendan earned 2% simple interest per year. -Neither of them made additional deposits or withdrawals.

Tia is planning a sailing party for her friends the boat rental is 15$ plus an additional 15$ per person tia has saved up 400$ what is the maximum number of people that can go sailing

A Number plus it's half is 21 How to write an equation?

You have 18 pears find 6 different ways to show equal groups

A bearing used in an automotive application is suppose to have a nominal inside diameter of 1.5 inches. A random sample of 25 bearings is selected and the average inside diameter of these bearings is 1.4975 inches.

A motorcycle purchased for 12,500 today will be valued 7% less each year. How much could you expect to receive for the motorcycle at the end of 4 years of you wanted to sell it?

Which expression is NOT equivalent to the other expression?

A soccer team won 6 games out of 10 total games. If they played 25 total games, how many games did they win?

The cost of 16 oranges is $1. What is the cost of 4 dozen oranges?