Step-by-step explanation:
3x + 12 - 2x + 8 + 5x
Solving like terms
x + 20 + 5x
20 + 6x
20 / 6 = x
Answer:
x = - 6
Step-by-step explanation:
Given
4(x + 6) - 2x = 12 ← distribute and simplify left side
4x + 24 - 2x = 12
2x + 24 = 12 ( subtract 24 from both sides )
2x = - 12 ( divide both sides by 2 )
x = - 6
Do a proportion
60/100= x/54
Cross multiply and divide
54 x 60= 3,240
3,240 divided by 100 is 32.4
Now subtract
54- 32.4= 21.6
Answer is $21.6
We are given with the formula
p = 200k - 500
a) The constraint for this formula is obtained from the idea that the profit must be positive
200k - 500 > 0
k > 500/200
k > 2.5
b) To make 14000 profit
14000 = 200k - 500
k = 72.5 or 73 knives must be sold
