Answer:
y=2x-1
Step-by-step explanation:
straight line equation
y=mx + c
find gradient(m) first,use formula;
m=3-7/2-4
m= -4/-2
m=2
use one the coordinates
(2,3)
3=2(2)+c
3=4+c
c=3-4
c = -1
y = 2x - 1
The average of the set of numbers is the quotient when the sum of the numbers is divided by the number of items. Given that Markus' fifth score x, the average is x+5. The equation for solving the fifth score and the arithmetic mean is,
(85 + 92 + 82 + 94 + x) / 5 = x + 5
Further simplifying gives,
(353 + x) / 5 = x + 5
Calculating for the value of x gives x = 82.
Any number that has an ending to it, or can be simplified, is a rational number.
The product of two rational numbers are always a rational number is true, because the two numbers with an ending to it will always result in a terminated answer.
Rational numbers can be always written as a fraction, because, if whole number (for example 5 = 5/1), you can place it over 1. Therefore, it is true
hope this helps
<h3>3856 books has to be sold so that the production costs will equal the money from sales</h3>
<em><u>Solution:</u></em>
Let "x" be the number of books
The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing)
The one-time fixed costs will total 52,056
The variable costs will be 9.75 per book
Therefore,
Cost = 9.75x + 52056 ------ eqn 1
The publisher will sell the finished product to bookstores at a price of 23.25 per book
Therefore,
Revenue = 23.25x -------- eqn 2
<em><u>How many books must the publisher produce and sell so that the production costs will equal the money from sales?</u></em>
Revenue = cost
3856 books has to be sold so that the production costs will equal the money from sales