How do u write the decimal as a percent: 0.246?

For what values of b will f(x)= logbx be a decreasing function? (16 )

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?