Question

A newspaper charges a flat

fee plus a charge per day to
place a classified ad.
Number
of Days
2
4
6
Total
Charges
($)
8
13
18

Answer 1

Answer: This problem can be represented by the equation y = mx + b, where y is the total charges, x is the number of days, m is the charge per day, and b is the flat fee.

To find the values of m and b, we can use the given data points to solve for the equation.

For x = 2, y = 8, so 8 = m * 2 + b

For x = 4, y = 13, so 13 = m * 4 + b

For x = 6, y = 18, so 18 = m * 6 + b

We can then use a system of equations to solve for m and b:

m * 2 + b = 8

m * 4 + b = 13

m * 6 + b = 18

Using substitution or elimination methods:

m = 2

b = 2

Therefore, the equation is: y = 2x + 2

This means that the flat fee is $2 and the charge per day is $2.

Explanation: