A material has an initial quantity of 15 units. Which equation models the amount of the material, y, decaying exponentially at a rate of 23% over time, X? y = 23(1.15)
y = 23(.85)x
y = 15(1.23)x
y = 15(.77)x

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

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?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8