How many pairs (a, b), where a and b are positive integers, satisfy the equation a2−b2=2015?

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?