Phil makes and sells rugs at his roadside stand. His monthly fixed cost for owning the stand is $714. If he makes and sells 20 rugs, his total costs are $774 and he brings in $480 in revenue. Find Phil's monthly cost, revenue, and profit functions (assuming they are linear). Let x be the number of rugs made and sold each month.

A minivan was purchased for $32,000. If the value of the minivan depreciates by $1,700 per year, find a linear function that models the value V of the car after t years. Use the function and find the value of the car after 5 years. (A) V(t) = -1,700t + 32,000; value after 5 years = $23,500 B V(t) = -1,700 + 32,000; value after 5 years = $30,300 (C) V(t) = 1,700 + 32,000; value after 5 years = $33,700 D V(t) = 1,700t + 32,000; value after 5 years = $40,500

Find a linear cost function. Thirty units cost $1500; 120 units cost $5640.

Each download costs $0.99 and there is a one-time membership fee of $10 Find the slope and y-intercept for the linear function.