SOLUTION: Define the variables and write an equation to model the relationship in each table: Number of Tapes Cost 1 $8.50 2 $17.00 3 $25.

Algebra ->  Expressions-with-variables -> SOLUTION: Define the variables and write an equation to model the relationship in each table: Number of Tapes Cost 1 $8.50 2 $17.00 3 $25.      Log On


   



Question 490210: Define the variables and write an equation to model the relationship in each table:
Number of Tapes Cost
1 $8.50
2 $17.00
3 $25.50
4 $34.00

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
you will use:
A common form of a linear equation in the two variables x and y is
y+=+mx+%2B+b
where m and b designate constants.



let num of Tapes be x (independent variable) and
total cost y(dependent variable)


so, we have

1.
y=+8.50%2Ax

2.
y=+17.00%2Ax

3.
y=+25.00%2Ax

4.
y=+34.00%2Ax