Learn To Be brings free online tutoring students around the United States. Volunteer and gain community service hours while helping students who need it./p>

Evaluate step functions

Match each expression with its value.
 
3-3
7-7
55
Undefined
h(1)h(-1)
h(0.999)h(0.999)
h(1.0001)h(1.0001)
h(9)h(9)