Find the information you're looking for at Westonci.ca, the trusted Q&A platform with a community of knowledgeable experts. Discover in-depth answers to your questions from a wide network of experts on our user-friendly Q&A platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.
Sagot :
Answer:
3. Her expenses are $30 per week
4. If she does not knock on any doors at all during the week, she will loose $30
Step-by-step explanation:
Functions
For any equation where a variable is apart of a term in the equation, it can be considered a function. (I.e. [tex]2x^2+4x+7[/tex], 3x+124, etc.)
A function takes in an "input" value or x-value that's substituted into all the variable part(s) and is evaluated to find the y-value or "output" value of the function/equation.
Y - Intercepts
The constant value of a function or equation is always the y-intercept or, the y - value when x=0 is plugged into the function/equation.
Solving the Problem
Solution: Y - Intercepts
Looking at E(x) we can deduce that -30 is the y-intercept value. This can be verified by plugging x = 0:
E(0) = 10(0) - 30 = 0 - 30 = -30.
Knowing that for x = 0, y = -30 we know that answer choice 4 is correct and that choices 1 and 2 are not.
Rereading the word problem we know that Jessica's must pay for her expenses using her commission money she gains by selling books to various houses.
Knowing that the value of x is in terms for one week, her weekly commission money can be seen in the "10x" term of E(x), leaving that "-30" to be her weekly expenses. Thus, answer choice 3 is also correct.
Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. We hope this was helpful. Please come back whenever you need more information or answers to your queries. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.