2. evaluate each expression when a = 4 and b = -1. a) a + b - 3 b) -2a - 3b + 7 c) 3b - 5 + a d) 1 + 2a - 3b e) a + b f) b - a

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?