What would the altimeter read if Janelle were at sea level? what do the positive reading on the altimeter represent? what do the negative reading on the altimeter represent?

If Janelle was at sea level then the altimeter would read 0. If she was above sea level then the altimeter would read above 1. If she was below sea level then the altimeter would read below or at -1.

Step-by-step explanation:

This is similar to negative and positive numbers.

shift 4 units up, and 1 unit left.

it will translate f(x) = 3^x to g(x) = 3^(x+1) + 4