2(x + 5) = 14
x = 2
x + 3 = 7
x = 4
8x - 4 = 5x + 14
6
If 3x - 4 = 27 what is 3x?
31
-x - 4 = 9
x = -13
x + 3x = -8
x = -2
Two kayaking companies offer kayak tours.
Company A charges $30 to rent the kayak and $4 for each hour spent on the water.
Company B charges $25 to rent the kayak and $5 for each hour spent on the water.
How many hours would you have to be on the water so that the price at both companies is the same?
5 hours
2x + 3 = 9
x = 3
The equation 𝑃 = 6.31𝐻 + 41.5 can be used to predict the points earned P, by a student on an organic chemistry final, based on the number of hours H, that he or she studies. To earn 95 points on the final, how many hours does the model suggest someone should study?
8.77
-8 = -3 + 5x
x = -1
True or False
3x + 6 = 8x - 4
and
5x = 10
True
-8 + x/2 = -35
x = -54
I'm thinking of a number. When I multiply the number by 4 and then subtract 20, I get -12. What is my number.
x = 2