Please help me solve following probability density functions

The random variable X has the following probability density function: 1 S I 0 is a constant. Find P(X > 25). Select one: 0 1 1/253 O 1/25 O 0The random variable X has the following probability density function: fx (x) = J ce I 10 elsewhere where c > 0 is a constant. Find P(X > 100). Select one: 0 1- 2-100 O e I 0 1-e-1 O e-100