A plane that carries mail makes a round trip each day from Chicago to New York. It makes 2 intermediate stops on the way to New

Question

3 years ago

15

A plane that carries mail makes a round trip each day from Chicago to New York. It makes 2 intermediate stops on the way to New

York and 1 intermediate stop on the way back to Chicago. Suppose you make a graph of the altitude of the plane for one day, with time on the horizontal axis and altitude on the vertical axis. How many times will the graph touch the horizontal axis?
A. 3
B. 6
C. 5
D. 9

Mathematics

2 answers:

Evgesh-ka [11] · Answer 1 · 2021-12-28T17:45:31+03:00

Evgesh-ka [11]3 years ago

7 0

C 3 plus two is five

Reptile [31] · Answer 2 · 2021-12-28T18:59:13+03:00

Answer:

Option: C

Step-by-step explanation:

As going from Chicago to New York the plane makes two intermediate stops.

This means that the graph will touch the Horizontal axis

at initial point when the flight is at Chicago

Next at the first intermediate stop

then at the next intermediate stop

finally after reaching New York

After going back from New York to Chicago

This means that the graph will touch the horizontal axis

first initially at New York
Then at the intermediate stop
Finally on reaching Chicago

but the Point on the Horizontal axis at New York and Chicago is counted twice

Hence, the total times the graph will touch the horizontal axis is 5.

Hence, option: C is correct.