What a 3 digit number that is divisible by both 3 and 4

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

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.