On Monday, there was no snow on the ground in Buffalo, New York. On Tuesday, three inches of snow fell. On Wednesday, a half an inch of snow melted. On Thursday, two and a half more inches fell. On Friday, another inch and a half melted. How much snow was left on the ground Friday night? Show your work and label your answer.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost