# math 6 algebra

Mikayla wrote the equation below to calculate y, the total amount of money in dollars she will have saved after she has been saving for x weeks. y = 6x + 80 How much more money will Mikayla have saved after 8 weeks compared to 5 weeks?

\$8
\$18
\$98
\$128
How do i do this?

1. 👍 0
2. 👎 0
3. 👁 81
1. Write two equations. Substitute 5 for x in one equation. Substitute 8 for x in the other equation.

1. 👍 0
2. 👎 0
2. what is 6 times 8 minus 80
what is 6 times 5 minus 80

subtract the second amount from the first, I get

6(8-5)

1. 👍 0
2. 👎 0
3. Ok so will it look like this then?

y = 30 + 80
y= 48 + 80

And the answer would be \$18?

1. 👍 0
2. 👎 0
posted by moby

1. 👍 0
2. 👎 0
5. Yeah!!:))))) Thanks guys!

1. 👍 0
2. 👎 0
posted by moby

## Similar Questions

1. ### Math

Mikayla wrote the equation below to calculate y, the total amount of money in dollars she will have saved after she has been saving for x weeks. y = 6x + 80 How much more money will Mikayla have saved after 8 weeks compared to 5

asked by Abagail on August 16, 2017
2. ### college algebra

Ivan is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Ivan has been adding money. Suppose that x and y are related by the equation

asked by Bessie on February 24, 2016
3. ### Math

Diane is putting money into a checking account. Let represent the total amount of money in the account (in dollars). Let represent the number of weeks Diane has been adding money. Suppose that x and y are related by the equation

asked by Tia on April 24, 2015
4. ### Math

Ryan, Darius, and Mason each have \$15.75. They each spend the same amount (d), in dollars, at the school fair. The total amount of money they will still have can be expressed as 3(15.75 - d). Which expression is equivalent to the

asked by Lili on February 21, 2019
5. ### algebra

A total of \$12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly interest is \$1,180, how much of the \$12,000 is invested at each rate? We have two unknowns: the amount of money invested at 9% and the

asked by lin on October 6, 2012
6. ### Algebra 1

The amount of money in an account may increase due to rising stock prices and decrease due to falling stock prices. Nathan is studying the change in the amount of money in two accounts, A and B, over time. The amount f(x), in

asked by Robert on August 14, 2019
7. ### math

When Mr. Lucky starts betting, he has 3 dollars. On any bet, he 7. wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total

asked by andre on July 5, 2016
8. ### algebra world problems

1) the odometer on your car reads 20,186.7 after going 62.3 miles. write and solve an equation to determoine how many miles were on the odometere before going 62.3 miles. i wrote this; 0-62.3 = 20,186.7 2) michael bought a \$25.00

asked by marko on October 17, 2011
9. ### rubidoux high school

Susan is putting money into a checking account. Let y represent the total amount of money in the account (in dollars). Let x represent the number of weeks Susan has been adding money. Suppose that x and y are related by the

asked by jessica mendez on February 11, 2015
10. ### Calculus

Twins, Pierre and Francesca were each given 100 dollars on their 15th bday. they immediately put ther money into their individual money boxes. Each week throughout the next year they added a portion of their weekly pocket money.

asked by Daisy on January 22, 2008

More Similar Questions