The Blue Ridge Mountains are rising at a rate of 1 × 10 –4feet per year. To determine how many feet the mountains will rise over the next 1 × 10 6years, a scientist performs the operation shown below. (1 × 10 –4 ) × (1 × 10 6 )

step-by-step explanation:

b, i believe, but not sure.

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.