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 Costs. 1  Cleaning an asphalt or wood shingle roof costs $25 to $30 per square (100 square feet), or $500 to $600. 2  For metal and slate roof cleaning, expect to pay $15 to $20 per square, or $300 to $400. 3  Flat roof cleaning prices run $10 to $20 per square, or $200 to $400.