Question

Help!
1. A company makes video games. The price of a video game is modeled by the function p(x) = 30x + 2, where x is the number of years since the company started producing games. The number of video games they sell is modeled by the function s(x) = 500x + 250. To find the total revenue from their video games, the company should use what operation on the polynomials?
Addition
Subtraction
Multiplication
It cannot be determined

2. Which of the following represents the area of a rectangle whose length is 3x + 5 and whose width is x - 2?
3x^2-x-10
3x^2-10
3x^2-x+10
3x^2-11x-10

Answer 1

p(x) - s(x)=0,
subtract

Answer 2

x=27/470… thats what i got

Answer 3

@dpasingh

Answer 4

Pls wait..

Answer 5

I'm sorry the functions has to be mulitplied

Answer 6

ok, I'm sorry i just need someone to help explain to me how to do it.

Answer 7

wait so is it subtraction or multiplication?

Answer 8

total revenue = p(x) * s(x)

Answer 9

oh, ok. what about the other one?

Answer 10

Multiply length by width

Area = (3x + 5)( x - 2) \[\huge =3x(x-2) +5(x-2) = 3x^2 -6x + 5x-10 \]
\[\huge =3x^2 -x -10 \]
Hence option 1 is the correct answer.

Answer 11

thank you!

Answer 12

Also i have one more question could you help me with it?

Answer 13

Let f(x) = 3x2 + x - 3 and g(x) = x2 - 5x + 1. Find f(x) - g(x).

Answer 14

how do i do this one?