MPM2D Lesson 1.1
By Wilson
Name: ______________________
Review: Solving Equations
An _____________ is a mathematical statement that says two expressions are equal.
2 x − 3 = 5x + 3
___________
___________
To ____________ is to find the value of the variable that makes the statement true.
Example 1: The cost to produce school t-shirts is modeled by the equation C = 1200 + 4n ,
where C is the total cost $ and n is the number of t-shirts.
a) How much would it cost to produce 400 t-shirts?
b) How many t-shirts could be made for $8000?
Example 2: A formula was developed to determine the strength of the taste of chocolate in
different chocolate drinks. The formula, S = 3c2 − 2 , where S is the strength of the
taste of chocolate in yahoos, and c is the amount of chocolate needed in grams.
a) What would the strength of the chocolate taste be if 39 grams of chocolate were used?
b) If a company wants a strength of 25 yahoos, how much chocolate is needed?
By Wilson
MPM2D
Name: ______________________
Example 3: If the width of the rectangle is 2 times the length plus 5, what are the dimensions if
the perimeter is 70m?
Let ____________ be _________________________
Let ____________ be _________________________
Example 4: Solve the following:
MPM2D
By Wilson
Name: ______________________