Answer:

Step-by-step explanation:
Multiply the fraction by the conjugate and solve (would explain more but you're on a time crunch)
Sub the numbers in
7 + 9(6)
=7 + 54
=61
Answer:
To do this, you imagine a vertical (up and down) line moving across your graph from left to right. It should only be touching the line at one point at a time. If it is touching more than one point on the line at a time, the line is not a valid function. The first line and its inverse both pass the test.
Step-by-step explanation:
The relative frequency of an event is defined as the number of times that the event occurs during experimental trials, divided by the total number of trials conducted.