L Pretest: Unit 2 Question 9 of 15
Does this set of ordered pairs represent a function? Why or why not?
{(6, 8), (2,3), (3, 2), (-3,2), (6, 7)}
A. No, because one x-value corresponds to two different y-values.
B. Yes, because every x-value corresponds to exactly one y-value.

What is the surface area of the sphere?

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)

Your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph.