Factoring
4
(2x + 8) + (5x + 10) =
7x + 18
b + 7 = 26
b = 19
2d + 15 = 21
2/5d = 12
d = 30
After paying 7 dollars for the pie, Sam has 73 dollars left. How much money did he have before buying the pie ? Write an equation for this problem.
c - 7 = 73
Factor 14x + 21
7(2x + 3)
(3.5x + 15) + (4x + 9)
7.5x + 24
5g = 125
g = 25
y/5 + 8 = 24
y = 80
3/4w = 13
w = 17.3
How many packages of diapers can you buy with $40 if one package costs $8? Write an equation to explain the situation.
8d = 40
16x + 56
8(2x + 7)
(16x + 5) - (10x + 2)
6x + 3
d/-6 = 9
-54
6(-2x + 3) = 30
x = -1
2/7g + 8 = 16
g = 28
Melanie bought a soft drink for 3 dollars and 7 candy bars. She spent a total of 24 dollars. How much did each candy bar cost ? Write an equation to explain this situation.
3 + 7c = 24
-20x + 45
-5(4x - 9)
(9x + 7) - (12x - 3)
-3x + 10
4/5k = 20
k = 25
-4(2.5b - 7) = 60
b = -3.2
4/9k - 13 = 18
k = 69.75
Sam had 212 dollars to spend on 8 books. After buying them he had 12 dollars. How much did each book cost ? Write an equation to explain the situation.
12 + 8b = 212
64x + 96
32(2x + 3)
A company has two new cars salespeople. Jane makes $120 plus $85 for each car. David makes $150 plus $70 for each car. How much does the company pay for both of them? Write as an expression together.
230 + 155c
-1/3s = 12
-36
John runs 1/2 mile every 3.5 minutes. He already ran 2 miles before this started. If he ran for 42 minutes, how many miles did he run altogether?
8 miles
2/5f + 7 = 3
f = -10
The seventh grade class is putting on a variety show to raise money. It cost $700 to rent the banquet hall that they are going to use. If they charge $15 for each ticket, how many tickets do they need to sell in order to raise at least $1000? Write an inequality for this situation.
700 + 15t >= 1000
Kevin has $25. MP3 downloads cost $0.75 each. How many songs can he download and still have $13 left to spend? Write an inequality for this situation.
25 - .75d <= 13