The nth term of a sequence is 7(n + 2).
What are the first four terms?

21, 28, 35, 42

Step-by-step explanation:

You need to do BODMAS / BIDMAS for this

So calculate what's inside the brackets first and then multiply by the 7

So

7(1+2) would be 7(3) which would be 7 x 3 = 21

and so on for the rest

7(2+2) = 28

7(3+2) = 35

7(4+2) = 42

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

answer: the sun

explanation:

water cycle describes the evaporation of water from earth's surface, formation of clouds and precipitation water back onto the surface of earth. seventy percent of the earth is covered with water in the form of seas and oceans. the heat of the sun causes the evaporation of water from the surface of the ocean. the water vapors rise and condense to form water droplets. the collection of these water droplets form clouds which rain down again.

the evaporation of the oceans surface water as part of the water cycle is caused by the sun