The height in feet of an arrow is modeled by the equation h(t)=(1+2t)(18-8t) where t is seconds after the arrow is shot. When does the arrow hit the ground

The sum of two numbers is 86, and their difference is 20. find the two numbers

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Identify the number as a rational or irrational.explain. 127