More Equations
3(q-5)=2(q+5)
q=25
4(13x)
52x
An online DVD rental company offers gift certificates that you can use to purchase rental plans. You have a gift certificate for $30. The plan you select costs $5 per month. How many months can you purchase with the gift certificate?
You can purchase the rental plan for 6 months.
10=15x
x=1.5
An equation that is true for every possible value of the variable is a?
Identity
7(6-2a)=5(-3a+1)
a=-37
2.2+(3.8-x)
6-x
Cole has $15 to spend on notebooks. Each notebook costs $3.99. What is the greatest amount, that Cole can spend on notebooks?
$11.97
-3.2z=14
z=-0.22
An equation that involves two or more variables is a?
Literal Equation
2r-(5-r)=13+2r
r=18
(m+4.5)-0.5
m+4
In a 3-year period, a city's population decreased by 7525 to about 581,000. What was the city's population at the beginning of the 3-year period?
589,125
19=r/3
r=57
Compares two numbers by division?
A ratio
8-(3+b)=b-9
g=3
2[2-(2-3)-2]
2
You have already read 117 pages of a book. You are one third of the way through the book. Write and solve an equation to find the number of pages in the book
351
x/-9=8
x=-72
A ratio of two equivalent measures in different units?
A conversion factor
(g+4)-3g=1+g
g=1
(1/2+1/3)^2
25/36
Uncooked rice has about 4/13 the weight of cooked rice. You want to make 6.5 lb of rice for the recipe. How many pounds of uncooked rice do you need?
21.125
1/2=y-3/2
y=2
A rate with a denominator of 1 unit is a?
Unit rate