Why do you have to flip where x is when you are doing porportions

The functions show two sisters' savings accounts and the rate at which they plan to deposit money. Which description best compares the two functions?

900+3-673/497+666=what

On the way to her babysitting job, Mary rode her bike for the first mile. She stopped at a traffic light and waited a few minutes for the traffic light to turn green. She then walked her bike across the street and up a short steep hill.

Simplify these expressions: 5m^2 x 2m 60cf/3f 15c-5f/2

to estimate your average monthly salary, divide your year salary by the number of months in a year. write and solve an equation to detrain your yearly salary when your average monthly salary is 5,460

What are the solutions of the system? Solve by graphing. y=x^2-2x-1, y = - 2

Write the polynomial in standard form and classify it by degree and by number of terms 2x-4x^3-7

Chantelle has signed up for hockey. Her parents set a limit of 400$ for the costs for the season. It costs 250$ to sign up plus 5$ for each ice-time. What is the maximum number of ice-times that Chantelle can go to

There are 10 people on a train and they each have 2 dogs how many dogs are on the train

Evaluate the expression below when x = - 4. 4x2 - 2x * 15