Will give brainliest if correct! If y + 1= 2015, for what positive integer w will 2y^2 + 2y = 2015w?

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?