2.1
Solve 0.29x+0.11x=20
x=50
2x+5x=-49
x= -7
550-25x=10+35x solve for x
x=9
5.3x+9=2.3x+15 solve for x
x=2
x+5=15
x=10
The community has a cooking class. Each student pays$15 for the class and $27 for materials. This month the cooking class brought in a total of $714. How many students are in the class this month?
15x+27x=714
x=17 students
-2.5x-3.6x=22.5 find x, round to one decimal place
x= -3.6885
x=-3.7
4x+6=5/2x+12 Solve for x
x=4
3-2x=5x
What is the variable?
What is the constant?
What are the like terms?
variable: x
Constant: 3
Like terms: -2x, 5x
x-3=12
x=15
-3.8x-5.9x=223.1 solve for x
x=-23
4/5x-1/4x=11 solve for x
x=20
A rental car charges$240 per week plus$0.25 per mile to rent a car. The charge for a truck is $180 per week plus$0.40 per mile. After how many miles is the total charge for each vehicle the same?
set up 240+0.25x=180+0.4
x=400 miles for the week the cost will be the same.
3x+15=4x+12 solve for x
x=3
2x=10
x=5
x-0.3x=350000 solve for x
x=500000
Toni goes to a ball game and buys a ticket. The total includes a charge of 7% of the original price for extra fees. If Toni pays a total of $44.94, how much was the original price of the ticket?
Set up .07x+1x=44.94
x=$42
150-x-2x=120+2x solve for x
x=6
2/3x+4=2x+1/5 solve for x
x=2.85
or
x=2 17/20
-5x=30
x=-6
3/8x+1/4x=20 solve for x
x=32
2.4x-9.1x+12.5x=-39.44 solve for x
x=-6.8
3x+5=10-4x
What is the variable?
What are the like terms?
Variable: x
Like terms: 3x, -4x and 5, 10
Toni has $1,250 each week she puts in$27.50 in her bank and Joe has $1,400 and each week he deposits $20. When will they have the same about in their account?
set up 1250+27.5x=1400+20x
x= 20 weeks they will have the same bank balance.
x/-2=10
x=-20