20 points plus a brainliest if its !

in the equation y=4^x, what values can x have?

a.
x must be an integer
b.
x must be a whole number
c.
x must be a rational number
d.
x can be any real number

Ahigh school has 3636 players on the football team. the summary of the players' weights is given in the box plot. approximately, what is the percentage of players weighing less than or equal to 225225 pounds?

At which value in the domain does f(x) =0?

The trigonometric ratios sine and secant are reciprocals of each other