A curve has the equation y=x^3 + ax^2- 15x + b,
where a and b are constants.
Given that the curve is stationary at the point (-1, 12),
(a) find the values of a and b

Cynthia takes her dog to the park every 2 days. she bathes her dog every 7 days. if she took her dog to the park and bathed him today, how long will it be until she does both on the same day again?

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost