Answer:
15x²
Step-by-step explanation:
Given
f(x) = 5x² , then
3f(x) = 3 × 5x² = 15x²
He made an error is step 2
3x + 18 = 2x +8
subtract 2x from each side
x + 18 = 8
Answer:
A symbol that stands for an arbitrary input is called an independent variable, while a symbol that stands for an arbitrary output is called a dependent variable. The most common symbol for the input is x, and the most common symbol for the output is y; the function itself is commonly written .
Step-by-step explanation:
what's up
Seek understand, to be understood!
To get the answer we need the formula or source.
The question in another way if 4cm=1.2km, what is the 10cm=--------
first, you have to use the crisscross.
4cm=1.2km
10cm= x it is variable
then, 4xx= 1.2kmx10cm
4x=12km
4x/4= 12/4
x=3km
Answer:

Step-by-step explanation:
We have been given that the monthly output at the Olek Carpet Mill is
units,
where x is the number of workers employed at the mill. We are asked to find instantaneous rate of change of monthly output with respect to the number of workers.
Let us find derivative of our given function.



To find instantaneous rate of change at
, we will substitute
in our derivative function as:


Therefore, the instantaneous rate of change is 200 with respect to the number of workers.