y = a + bx. where y is the dependent variable and x is the independent variable. In this case, the slope is equal to b and a is the intercept. When plotted on a graph, y is determined by the value of x. Regression equations are charted as a line and are important in calculating economic data and stock prices.
I just took a prom dress to be dry cleaned and they are charging $25.00.
Roof Cleaning Average Costs. The actual cost of roof cleaning depends on your location, the complexity of the job (i.e. roof size and pitch and the height of your home), and other factors. The following prices are only general estimates.1  On average, roof cleaning pricing is $.15 to $.30 per square foot, or $15 to $30 per square (a square, in roofing terminology, is equal to 100 square feet). 2  For an average-sized roof of 1,500 square feet (15 squares), that s a total cost of approximately $250 to $500.oof Cleaning Average Costs. The actual cost of roof cleaning depends on your location, the complexity of the job (i.e. roof size and pitch and the height of your home), and other factors. The following prices are only general estimates.