6th grade math help me please

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Which of the following values cannot be probabilities? 0.08, 5 divided by 3, startroot 2 endroot, negative 0.59, 1, 0, 1.44, 3 divided by 5 select all the values that cannot be probabilities. a. five thirds b. 1.44 c. 1 d. startroot 2 endroot e. three fifths f. 0.08 g. 0 h. negative 0.59

Write the equation in logarithmic form m^x=n