A submarine’s elevation is −280 feet relative to sea level. A shark is swimming at an elevation of −20 feet. What is the difference in elevation between the submarine and the shark?

260 ft

Step-by-step explanation:

-280+20=260

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy