write the equation of the line that passes through the points (8,–1) and (2,–5) in standard form, given that the pointslope form is y+1=(x–8). x+y=

Answer these questions showing your work plz

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.

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is