Question

Algebra plz

Answer 1

The function for the cost of materials to make a biscuit is f(x) = four-fifths x + 4, where x is the number of biscuits. The function for the selling price of those biscuits is g(f(x)), where g(x) = 4x + 5. Find the selling price of 15 biscuits.

Answer 2

plug in f(x) in to g(x)

g(x) = 4x + 5
f(x) = 4/5x + 4


g(f(x)) = 4(4/5x + 4) + 5

simplify it :)

Answer 3

3 1/5x + 16 + 5
3 1/5x + 21

Answer 4

yup, it might be better if we keep it as 16/5 until the end

now we have to plug in x = 15 since they want the selling price

(16/5 * 15) + 21 = ??

Answer 5

69

Answer 6

Bingo. Well done :)

Answer 7

I need more help
btw i'm the guy from yesterday that you helped too
I'm now practicing for my test with a practice test

Answer 8

I helped too many people, but I think I remember which one you're talking about xD

sure, make ask away (:

Answer 9

alright thanks

Below are two different functions, f(x) and g(x). What can be determined about their slopes?
f(x) = 2x + 3

answer choices
The function f(x) has a larger slope.
The function g(x) has a larger slope.
They both have the same slope.
The relationship between slopes cannot be determined.

I think it's the first answer choice

Answer 10

correct

Answer 11

Ella runs a cat rescue center. She started with 2 cats, and her center has an increase of 5 cats per year. Which of the graphs below represents the number of cats per year at Ella's center?

Is the equation y=5x+2? for the graph

Answer 12

correct :)