Which factorizations can be used to identify the real zeros of the function f(x)=20x^2+23x-6

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?