Suppose t varies jointly as x and the square root of y. If t = 2.16 when x is 3 and y is 36, what is t when x is 4 and y is 25?

Pelle's sister is three years older than pelle the father is 5 times as old as pelle the mother was 28 when the sister was born altogether they are 98 years old how old is pelle?

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?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m