MPM2D
Name: ______________________
Review: Solving Equations
An _____________
is a mathematical statement that says
two expressions
are equal.
3
5
3
2
+
=
−
x
x
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
1200
4
C
n
=
,
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,
2
3
2
S
c
=
, 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?
___________
___________