In a savanna, the average yearly rainfall is 150 cm. The average yearly rainfall in a desert is 25 cm. If a global climate change causes the savanna's average yearly rainfall to decrease by 0.5 cm each year, in how many years will the savanna become a desert?

exa:

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3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d