(50 POINTS!) You buy a bottle of water and a dish of frozen yogurt. The table shows the total cost of the purchase for different amounts of frozen yogurt. Write a linear model that represents the total cost as a function of the number of ounces of frozen yogurt.

Step-by-step explanation:

Use two pairs of points from the table:

The function in slope-intercept form:

Find the slope:

Use one of the points and find the y-intercept:

The line is:

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w