To the nearest hundredth, what is the area of a circle with a radius of 3 units

Which table represents a linear function? i'll give brainliest to first answer ^'^

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!