I need help with this math question pls help 1. Which one best describes the idea of function?
A. You can change everything to it opposite
B. Relates an input to an output
C. A function can have multiple output
D. You just flip it across the x axis

2. f(x) can be equal to four different expressions and still represent one function?
A. True
B. False

3. f(x)=3x -1 is a linear function?
A. true
b. false

Which of the following are parts of a sphere

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?