The online learning model that allows students to choose when they will log on instead of having pre-set times is referred to as:
a. synchronous
b. asynchronous
c. unscheduled
d. open enrollment

Worth 50 points answer them bc i am not sure if i am wrong

Radar devices are used by law enforcement to be sure that individuals are driving safely. they tell the officer how fast the vehicle is traveling at that specific moment in time. the radar device determines the vehicle's a. instantaneous speed. b. acceleration. c. maximum velocity. d. average speed.

The elements of an integer-valued array can be set to 0 (i.e., the array can be cleared) recursively as follows: an array of size 0 is already cleared; otherwise, set the first element of the array to 0, and clear the rest of the array write a void function named clear that accepts an integer array, and the number of elements in the array and sets the elements of the array to 0.