I need help asap please?

If the square of a positive integer is added to 2 times the integer the result is 48. find the integer.

Could someone me with this, ? : )

Ary throws a plastic disc to her friend, which her friend catches six seconds after mary throws it. the table shows the height of the disc at one-second intervals. assuming that the throw represents projectile motion, what are the missing values in the table? a = 5, b = 3 a = 4, b = 0 a = 4, b = 3 a = 5, b = 0