not exactly sure what to round to. but if you're ruining to the nearest hundred it would be : 82.87 and to the nearest tenth is would be : 82.9 (:
Part A:
3.14 X (4)^2 X 3/3
= 50.26548246
Answer:
You use the vertical line test to see if a function is relation is a function
Step-by-step explanation:
A function is a relation with only one output for every input. That means that if the x value and two y values, it is not a function.
Additive indentity

n = 1
a variable is always a number itself remember 7+n
5+2 = 7