A pizza company uses equation C = 15n to calculate the cost of buying a number of pizzas. What is the constant of proportionality in the equation? What information does the constant of proportionality provide you?

After two years, how much has been paid into interest?

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0