Jamal buys postcards of Washington, D.C., for $10.20, not including tax. Each postcard cost $0.85. How many postcards did Jamal buy? (giving 20 points to first one who answers it)

Answer:

( f o g) (x) = 3x²+5

Step-by-step explanation:

We have given two functions :

f (x) = 3x + 2

g(x) = x² + 1

We have to find   ( f o g) (x) =?

( f o g) (x) = (f(g(x))

Putting the values of functions in above formula.

( f o g) (x) =  3(x²+1)+2

( f o g) (x) =  3x²+3+2

Adding like terms,we have

( f o g) (x) = 3x²+5

( f o g) (x) = 3x²+5 is the answer.

Answer: (f o g)(x)=

Step-by-step explanation:

To solve this problem you must apply the following proccedure:

(f o g)(x) indicates that you must substitute the function g(x) into the function f(x).

Therefore, you have:

(f o g)(x)=

Now, you must simplify it, as it is shown below:

Apply the distributive property and add the like terms:

(f o g)(x)=

(f o g)(x)=

15

Σ  40

n=6

explanation; add all the numbers to get 40

6 is the first number and 15 is the last number

Answer: D on edg

Step-by-step explanation:

Answer:

P = 1.44 Watts

Step-by-step explanation:

We know that the relation between voltage and current in a simple circuit with a resistor is

V = I.R

Where

V = the voltage of the source

I = current of the circuit

R = resistance

The power is defined as

P = V.I

Which is the same as

P = V.(V/R)

P = (24 v)^2 / (400 ohm)

P = 1.44 Watts