The function can use all values of x which means x is in between -inf and +inf. The first option expresses this.
2 and 3/4 is a mixed number and the decimal of it is 2.75
Answer:
k =4/5
Step-by-step explanation:

Answer:
4-3=1
8+9=17
7 x 2= 14
Step-by-step explanation: