Keith bought a soda for 3 dollars and 9 candy bars. He spent a total of 30 dollars. How much did each candy bar cost?
$3.00 for each candy bar
200
2m - 3m + 5
-m + 5
200
3b - 2(1 - 3b)
-3b - 2
200
-8 + x/3 = -18
x = -30
200
5(4x - 3) = -75
x = -3
200
On Monday, 169 student went on a trip to the zoo. All 4 buses were filled and 5 students had to travel in cars. How many students were in each bus?
41 students on each bus
300
10 + v + 3v - 6
4 + 4v
300
3(3x + 4) -2
9x + 10
300
-2x + 12 = -14
x = 13
300
-24 = -4(-4x -2)
x = -2
300
Sandy had 152 dollars to spend on 9 books. After buying them she had 17 dollars. How much did each book cost?
$15.00 for each book
400
n + 9r + 5n - 12r
6n - 3r
400
-5x + 4(-x + 4)
-9x + 16
400
-12 = -2x - 2
x = 5
400
3(-4x - 3) = -45
x = -3
400
Oceanside Bike Rental Shop charges a 17 dollar fixed fee plus 9 dollars an hour for renting a bike. Time paid 80 dollars to rent a bike. How many hours did he pay to have the bike for?
7 hours
500
-3x -y + 7x - 2y + z
4x -3y + z
500
6(8k - 8) + 8
48k - 40
500
-49 = -6x - 13
x = 6
500
6 = 3(-2x - 4)
x = -3
500
The sum of 3 consecutive numbers is 105. What is the smallest of the three numbers?