Find the cost per pound of a coffee mixture made from 5 ib of coffee that cost 9.60 per pound and 15 ib of coffee that cost 5.20 per pound

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Which expression gives the exact value of x?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet