Answer:
B. 45
Step-by-step explanation:
If im wrong please let me know
Have a nice day :)
Answer:
The correct answer is c) p(x)=10x-30
Step-by-step explanation:
The answer is given in the question, you just have to replace r(x) and c(x) in the profit formula.
p(x)=r(x)-c(x)
- The revenue is: r(x)=18x
- The cost is c(x)=8x+30
p(x)=18x-(8x+30)
Solving=
p(x)=10x-30
<em>Be careful with the signs</em>
So the correct answer would be option :
c) p(x)=10x-30
Answer:
x = -2 0r x = 6
Step-by-step explanation:
from the question
X² – 4x – 12=0
solve by completing the square method
we have;
X² – 4x – 12=0
X² – 4x = 12
to make the left hand side a perfect square we add 4 to both sides.
X² -4x + 4 = 12 + 4
X² -4x + 4 = 16
from left hand side X² -4x + 4
= (x -2) × ( x -2)
it can be simply expressed as
( x-2)²
so since X² -4x + 4 has been simplified to be ( x-2)²
then,
( x-2)² = 16
x - 2 = √ 16
since square root has two values it can either be positive or negative
so we have
x = 2 + √16
or
x = 2 - √16
therefore
x = 2 + √16
x = 2 + 4
x = 6
0r
x = 2 - 4
x = -2
Answer:
Step-by-step explanation:
22
Answer:
3 gallons
Step-by-step explanation:
2 - 1 + 2 = 3