Brailliest+46 pts

Is there a correlation between the hours spent on homework and the test score? If there is, explain.

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

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)