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Tutors Answer Your Questions about Coordinate-system (FREE)
Question 29187: I have such a difficult time with these types of problems. All assistance is greatly appreciated.
A salesperson receives a fixed salary plus a percentage of all sales. The linear equation y = 0.05x + 500 describes the weekly salary, y, in dollars, in terms of weekly sales, x, also in dollars.
a. Use the formula to find the weekly salary for sales of $0, $1, $2, $3, $4, $5, $100, and $1000.
b. What is the slope of this equation? What does it represent in this situation?
c. What is the y-intercept of this equation? What does it represent in this situation?
Click here to see answer by venugopalramana(3286)  |
Question 29860: I am working with parabolas. For this problem I need to
Complete the square
Give the Vertex
Give the Axis
Give the x-intercepts
Give the y-intercepts
Give a point symmetric to the y-intercept
Draw the graph
The problem is y=x^2-2x-3.
Can anyone help me solve this. I am working on it and would like to have something to check my answer with.
Click here to see answer by venugopalramana(3286) |
Question 30386: You purchase 8 gallons of paint and 3 brushes for $152.50.The next day, you purchase 6 gallons of paint and 2 brushes for $113.00. How much does each gallon of paint and each brush cost?
Click here to see answer by Paul(988) |
Question 30829: In review for an exam, I've back-tracked to see where I got lost and here it is: with the ordered pair (0,5) and (4,0), the origin lies on both the x and y axis, its coordinates are (0,0). The origin is often labeled with the letter "o". How do you know the origin and where did the (0,0)come from? I hope this doesn't sound too stupid! Thanks in advance
Click here to see answer by Nate(3500) |
Question 31142: In most businesses, increasing prices of their product can have a negative effect on the number of customers of the business. A bus company in a small town has an average number of riders of 1,000 per day. The bus company charges $2.00 for a ride. They conducted a survey of their customers and found that they will lose approximately 50 customers per day for each $.25 increase in fare.
Identify the graph of the function, give the domain and range as shown in the graph you have drawn, and also the domain and range of the entire function excluding unrealistic values.
Click here to see answer by venugopalramana(3286) |
Question 32441: I am trying to figure out graphing. I don't understand why my graphing is different than the equasion. I am working on finding the equation of a line. The question is y=mx+b and the numbers are 3x+y=3 so I minus 3x from both sides to get y alone and then my equasion is y= -3X + 3 but on the graph I am suppossed to find the slope and the y intercept for the equasion and graph it but one of the numbers that is being graphed is 3 on the y line and then it is also a 1. I don't understand how the answer book got 1.
Click here to see answer by checkley71(8403) |
Question 30540: when a question asks you to show something algebraically, DO NOT substitute numbers for the variables and give me an example. On the other hand, when a question asks you to show something numerically or to provide an example, you may substitute numbers for the variables. Show all work
Before GPS and on-board targeting computers, engineers had to figure out how to calibrate optical bomb sites so as to accurately drop bombs on targets. From physics, we know that the altitude of a bomb t seconds after release from a plane flying at an altitude of s0 feet is given by the function s(t) = s0 - 16t2 (disregarding air resistance). We also know that, since d = rt, a bomb released from a plane traveling at r mph itself has a velocity of r mph and will travel rt miles in t seconds (again disregarding air resistance).
a. If a bomb is released at 20,000 feet, how long will it take to strike the ground? (Hint: solve s(t) = 0 for t using s0 = 20,000.)
If R in the diagram is the release point of a bomb relative to the ground, how far should R be from the target to insure a hit, assuming the plane has a velocity of 300 mph?
Click here to see answer by stanbon(75887) |
Question 27517: driving down a mountain, tom finds that he has descended 1800 ft in elevation by the time, he is 3.25 mi horizontally away from the top of the mountain. find the slope of his descent to the nearest hundredth.
i started with y=3.25x+1800. i dont know how to work it out from there
Click here to see answer by stanbon(75887) |
Question 35177: I can not figure out this problem, please help: In most businesses, increasing prices of their product can have a negative effect on the number of customers of the business. A bus company in a small town has an average number of riders of 800 per day. The bus company charges $2.25 for a ride. They conducted a survey of their customers and found that they will lose approximately 40 customers per day for each $.25 increase in fare.
Click here to see answer by checkley71(8403) |
Question 36408: What is the equation of the line passing through the points
(-3,8) and (-4,-5)
A)y=13x-47
B)y=13x+47
C)y=13x-31
D)y=-13x-31
Please show me all your work so that I can learn how to do this..thanks
Click here to see answer by ilana(307) |
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