3 years ago

Combine like terms.9 + 18s – 7s a. 20s b. 9 + 11s c. 9 – 11s d. 20

1 answer:

5 0

9+ 18s -7s
= 9+ (18s -7s) (combine like terms)
= 9+ 11s

The correct answer is b. 9+ 11s.

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iren [92.7K]

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Korolek [52]

Since, population of species A is represented by : $P=2^{x} +19$

Let us find the population of species A, at the end of week 1:

i.e., x = 1

i.e., $P(1)=2^{1} +19$

i.e., $P(1)=2 +19$

i.e., $P(1)=21$

Also, since population of species B is represented by : $P=3^{x} +18$

Let us find the population of species B, at the end of week 1:

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i.e., $P(1)=3 +18$

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Hence, option D is correct.

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3 years ago

MatroZZZ [7]

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2 years ago