Find the zero of the function:
y= x^2 - 4x - 3

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.