Is there any more information
Yes because the square root of 2,500 is 50 and 50 is a rational number.
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Answer: Choice B) -471,861</h3>
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Explanation:
This is a geometric sequence because each new term is found by multiplying the last term by -4.
The common ratio is r = -4. The first term is a = -9. We want to sum up n = 9 terms.
Use the geometric nth partial sum formula below to plug in the terms mentioned

Answer:
40 so C would be your answer.
18 is what percent of 90
Make an equation.
18 = x% of 90
18 = 90x
Divide 90 to both sides:
x = 0.2
Multiply by 100:
0.2 * 100 = 20%