How do you tell if a equation is linear or non linear

Earl has $571 in his checking account. After he writes a check to the bookstore for $285, how much is remaining in his account?

The annual tuition at a specific college was $20,500 in 2000, and $45,4120 in 2018. Let x be the year since 2000, and y be the tuition. Write an equation that can be used to find the tuition y for x years after 2000.

What is the radius of a diamiter of 7/2?

What are the partial products of 42x5?

3. A savings account has a 3% interest rate. (a) Complete the ratio table shown. Show your work. Deposit ($) 100 50 300 Interest ($) 12 (b) How much more interest would you have if you deposited $200 than if you deposited $150? Show your work.

For which equation would x = 12 be a solution? x + 4 = 12 48 : x = 12 12 - x = 4 12x = 144

The rectangle below has an area of x^2-9 square meters and a width of x-3 meters. What expression represents the length of the rectangle?

Mr. Haney has 11 coins in dimes and quarters. The value of his coins is $2.15. how many dimes does he have?

Different varieties of field daisies have numbers of petals that follow a fibonacci sequence. Three varieties have 13,21, and 347 petals. How many petals do the next two varieties of field daisy have? a. 42, 55 b. 47,60 c. 42,50 d. 55,89

A certain hybrid car can travel 1 4/11 times as far as a similar non hybrid car can, each on one gallon of gasoline. If the non hybrid car can travel 33 miles per gallon of gasoline how far can the hybrid travel on 4/5 gallon of gasoline?