4. A plumber charges $65 per hour to fix a leak. What is an equation that relates the total cost of a leak repair c to the number of hours, h, it takes the plumber to fix the leak?
The equation that relates the total cost of a leak repair c to the number of hours h is:
c = 65h
Solve for x:
2x=-6
To solve for x in the equation 2x = -6, we can divide both sides of the equation by 2:
2x/2 = -6/2
x = -3
Therefore, the solution is x = -3.
Solve for x:
x+12=-15
To solve for x in the equation x + 12 = -15, we can isolate x by subtracting 12 from both sides of the equation:
x + 12 - 12 = -15 - 12
x = -27
Therefore, the solution is x = -27.
7. Solve for p:
8p – 3 = 13
To solve for p in the equation 8p - 3 = 13, we can isolate p by adding 3 to both sides of the equation:
8p - 3 + 3 = 13 + 3
8p = 16
Next, we divide both sides of the equation by 8:
8p/8 = 16/8
p = 2
Therefore, the solution is p = 2.
8. Solve for j:
8j – 5 + j = 67
To solve for j in the equation 8j - 5 + j = 67, we can combine like terms:
9j - 5 = 67
Next, we isolate j by adding 5 to both sides of the equation:
9j - 5 + 5 = 67 + 5
9j = 72
Finally, we divide both sides of the equation by 9:
9j/9 = 72/9
j = 8
Therefore, the solution is j = 8.
Solve for x:
3(2x-5)=4x+33