For all of the questions or only one-?
Answer:
OD.0
Step-by-step explanation:
because 2(X+4)-1 = 2x+7
or, 2x+8-1 = 2x+7
or, 2x+7= 2x+7
and it cancels out eachother so it will be 0
Answer:
The average rate of change is 8.
Step-by-step explanation:
The formula to calculate the average rate of change of a function F(x) is:
![\frac{F(b)-F(a)}{b-a}](https://tex.z-dn.net/?f=%5Cfrac%7BF%28b%29-F%28a%29%7D%7Bb-a%7D)
In this case, F(x) = ![0.5x^{2} +5x+9](https://tex.z-dn.net/?f=0.5x%5E%7B2%7D%20%2B5x%2B9)
a=2 and b=4
You have to evaluate x=2 (which is a in the formula) and x=4 (which is b in the formula) in the function.
In order to obtain F(b) and F(a) you have to replace x=4 and x=2 in the given function:
F(b) = ![(0.5)4^{2} + 5(4) +9= 37](https://tex.z-dn.net/?f=%280.5%294%5E%7B2%7D%20%2B%205%284%29%20%2B9%3D%2037)
F(a) = ![(0.5)2^{2} + 5(2)+9=21](https://tex.z-dn.net/?f=%280.5%292%5E%7B2%7D%20%2B%205%282%29%2B9%3D21)
![\frac{F(b)-F(a)}{b-a} = \frac{37-21}{4-2}=\frac{16}{2} = 8](https://tex.z-dn.net/?f=%5Cfrac%7BF%28b%29-F%28a%29%7D%7Bb-a%7D%20%3D%20%5Cfrac%7B37-21%7D%7B4-2%7D%3D%5Cfrac%7B16%7D%7B2%7D%20%3D%208)
The answer is 8.
Assume that the bank balance started at zero. Enter the income and outgo in chronological order: $300 - $50 - $75 + $225
Find the sum. This sum will represent the amount left in the account after the $225 deposit:
$250 - $75 + $225, or
$175 + $225 = $400 The final balance will be $400.