How do you know there is direct variation in an equation?

1/2 (6x - 4) = 4x - 9 What's x?

A bank employee notices an abandoned checking account with a balance of $360. The bank charges a $9 monthly fee for the account.

A bag contains purple marbles and green marbles, 39 in total. The number of purple marbles is 9 less than 3 times the number of green marbles. How many purple marbles are there?

A King Size waterbed has the following dimensions 72 in. x 84 in. x 9.5in. It takes 240.7 gallons of water to fill it, which would weigh 2071 pounds. What is the weight of a cubic foot of water?

Harper brought $45 to the bowling alley. She spent $25 on bowling and plans to spend the rest of the money playing arcade games. Each arcade game cost $0.25.

9/10 miles in 5 minutes At this rate how many miles can he in in one minute

A fitness club requires a one - time free of $100 and dies of $20 every month. write an expression for the total cost of membership for n months

Solve quadratic equation by factoring 3x^2-16x-12=0

Write the equation for the table below? (x) 3 2 1 0 (Y) 6 8 10 12

What is 40/24 simplified