Answer:
Depending on the problem. Usually, no.
Step-by-step explanation:
Answer:
21. d. 39
22. c. 20; 7
Step-by-step explanation:
21. This is straightforward evaluation of the function. Put the numbers 8 and -5 where x is in the function definition and do the arithmetic. Then find the difference of the results.
f(8) = 3·8 -2 = 22
f(-5) = 3·(-5) -2 = -17
f(8) - f(-5) = 22 - (-17) = 22 +17 = 39
__
22. The first part is similar to 21—evaluate the function for x=2.
f(2) = 24 -2·2 = 24 -4
f(2) = 20
Note that this result is sufficient to allow you to choose the correct answer.
However, we can also do the second part. Find x for f(x) = 10
f(x) = 24 -2x
10 = 24 - 2x . . . . . . substitute 10 for f(x)
-14 = -2x . . . . . . . . . subtract 24 from both sides
7 = x . . . . . . . . . . . . . divide both sides by -2
Answer:
25 percent
Step-by-step explanation:
7200 divided by 1800 is 25
Answer:
The y-intercept of the function is -210 and the x-intercepts of the function are 5,6,7.
Step-by-step explanation:
The given function is
To find y-intercept put x=0.
The y-intercept of the function is -210.
To find the x intercepts put f(x)=0.
For x=5, the above equation is true, therefore (x-5) is factor of the equation.
Use synthetic method to find the factors.
Use zero product property and equate each factor equal to zero.
Therefore the x-intercepts are 5, 6 and 7.
Answer:
The average change in balance each day during his time $41
Step-by-step explanation:
Here, we want to write an integer to represent the average balance change in the 30 days period.
First, let’s find difference between opening and closing balance= (1800-570) = 1230
We shall now divide this by 30 = 1230/30 = $41