HELP PLZ GUYS.! Use Descartes’ rile of signs to describe the roots for each polynomial function.

m(x) = x^3 + 3x^2 - 18x - 40

AND

w(x) = x^4 + 4x^3 - 7x^2 + 20x - 21

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

the answer is a beach is the best place to be

60 for the first and 130 for the second

step-by-step explanation:

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