Lena would like to be able to know her exact location on a map as she travels across the country. which technology would
best lena?
cb radio, because it uses hf radio waves
mri, because it uses magnets to produce a picture
radio telescope, because it captures radio waves from space
gps, because it uses satellites thing provide position and velocity data

GPS

Step-by-step explanation:

A GPS would help best because it uses satellites to provide exact location across the world and is up to date and very reliable! Have a nice day!

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2