Exp vs Eq
Classify the following:
2x+3y+12
What is an Expression
10879-47x=3
What is 10879 called?
What is a Constant
Rewrite the statement as an expression:
Increase x by 25%
What is 1.25x
How many vertices does a quadrilateral have?
What is four.
What is a principal when calculating interest?
Classify the following:
37=5z+13y-4
What is an equation
3x+7=12
The 3 in 3x is called what?
What is a Coefficient
David is saving $8000 to buy a car. He has already saved $125. He will mow x yards for $15 a piece to earn the rest of the money.
Write an equation to represent the scenario.
What is 8000=15x+125
What is the expression to find the total number of diagonals including duplicates in a polygon?
What is n(n-3).
In the following equation what does the variable r represent?
A= P(1+r)2
What is the interest rate.
Contains two or more mathematical expressions with an equal sign between them.
What is an equation
144= 12x-4
12x is called what?
What is a term.
Mark is selling cookies for $5 a piece for band camp. He has already sold $150 worth of cookies. The following equation represents the scenario: y=5c+150.
What does the variable y represent?
What is the total amount David will make from selling cookies.
Why do we divide the total number verticals by 2 to remove the duplicates?
What is every diagonal is connected to two vertices and will therefore be counted twice so we divide by two to avoid duplicate counts.
Suppose you invest $8000 in a money market account with a 5% simple interest rate. How much interest will you earn after 2 years?
What is $800.
The combination of numbers, variables, and functions without an equal sign.
What is an Expression
What is a letter that represents a quantity that can change?
Ex: x, y, z
What is a variable
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Free 400 points!
How many diagonals excluding duplicates does an octagon have?
What is 20.
Suppose you invest $4000 in an account that earns 12% interest, compounded annually. Write an expression for the amount in the account at the end of each year.
What is $4000(1+0.12)t.