Ratios
Find an equivalent ratio of 6: 9
2: 3
12: 18
.........
4 + m = 24
m = 20
2x + 4 =22
x= 9
4 + 3 x 2
10
each ticket to a school dance is $4. the total amount collected in ticket sales is $332.
a. write an equation that represents the situation.
b. find the number of students attending the dance.
a. 4x= 332
b. 83
A gallon of milk costs $5.29 while a half-gallon of milk costs $3.50. In a half-gallon of milk, approximately how much more does each cup cost? (There are 16 cups in a gallon.)
$0.11
h - 94.43= - 324.5
h =-230.07
7.4 + 3g = - 4.6
g= -4
(4+3)+1x2
9
Jeff wants to save $4,000 to buy a used car. He has already saved $850. He plans to save an additional $150 each week.
Write and solve an equation to represents the number of weeks remaining until he can afford the car.
150x+800=4,000
x~21
2/16 and 12.5 are equivalent?
Yes or No
N0
93.15 + b = 73.1
b = -20.05
18.9 - 2x = 20.90
x = -1
3 x 1 +|-4+1|
6
Lois and Clark own a company that sells wagons. The amount they pay each of their sales employees (in dollars) is given by the expression 12h+30w where h is the number of hours worked and w is the number of wagons sold.
What is the amount paid to an employee that works 6 hours and sells 3 wagons?
162
A dozen pens sell for $4.99 while a dozen pencils sell for $3.79. What is the difference in unit cost?
$0.10
167x = 1,169
x=7
(x+1) divided by 7 equals 3
x=20
8 + |- 2 - 5| x 6
50
The price of a visit to the dentist is calculated according to the formula 50+100n where n is the number of cavities the dentist finds.
On your last visit to the dentist, 2 cavities were found.
What was the cost of your visit?
$250
The san Francisco Humane Society has a cat-to-dog ratio of 3:2. If there is a combined total of 250 cats and dogs, how many are dogs?
100
45.01+b = 76.5
b= 31.49
9 multiplied by (g+3) =27
g= 0
| -9+3|+4 -5 x 8
-30
Bethany sells roses and petunias. The expression 3r+2.5p, p gives the cost (in dollars) of r roses and p petunias.
What is the cost of 7 roses and 8 petunias?
$41