Answer:
The value would be -396
Step-by-step explanation:
In order to find this, put in 3 for every value of x and then simplify.
-2x(2 x^3+3x^2-5x)
-2(3)(2(3)^3+3(3)^2-5(3))
-6(2(27) + 3(9) - 15)
-6(54 + 27 - 15)
-6(66)
-396
Answer:
The required expression would be
Step-by-step explanation:
Since, the amount formula is,
Where,
P = invested amount,
t = number of periods,
r = rate per period,
Given,
The invested amount at month 1, P = 4,
Number of periods from month 1 to month 4, t = 3
Amount at the end of fourth month, A = 256.
By substituting the values,
Hence, the amount of money at the end of t months.
Answer:
1. f(x) is the total cost
2. x is the hours spent on the internet
3. the base rate is 3.50
4. hourly charge is .75
5. 4.63
Step-by-step explanation:
1. f(x) is the total cost or the amount of money he has to pay
2. x is the hours spent on the internet, it is the time spent on the internet
3. the base rate is 3.50, or the minimum amount just to get connected
4. hourly charge is .75
5. Let x = 1.5 for the hour and a half
f(1.5) = .75(1.5) + 3.5
1.125+3.5
4.625
To the nearest cent
4.63