7x-4y=-7

5x+y=22

how do I solve this using substitution?

The Acme Car Company sold 37 vehicles in June. How many compact cars were sold in June?

How much do 10 pieces of candy cost if one thousand pieces cost $10?

Andrea has 800L of acid solution. She obtained it by mixing some 7 % acid with some 10 % acid. Her final mixture of 800L is 9.25 % acid. How much of the 7 % and 10 % solutions did she use to make her final mixture?

An arrow is shot straight up from a cliff 58.8 meters above the ground with an initial velocity of 49 meters per second. Let up be the positive direction.

Divide 645 by 3 to get your answer

A city of 100,000 people is growing at a rate of 5.2% per year. Assuming this growth rate remains constant, estimate the population of the city 5 years from now.

The beginning balance of a credit card account is $500. The monthly interest rate is 0.012. If a payment of $100 is made on the last day of the month, what is the ending balance?

If 25% of an item is $17.00 what is the original price?

Slope and y intercept

A website requires a 7-digit password. How many different passwords can be made using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if each number can only be used once? A. 120 B. 70 C. 5,040 D. 604,800