Cobalt-60 has a half-life of about 5 years. How many grams of a 300 g sample will remain after 20 years? A: 0.0625 g

B: 9.375 g

C: 18.75 g

D: 37.5 g

Alex is mailing an envelope that weighs 0.346 pound. What is the weight of the envelope rounded to the nearest hundredth

A rectangle is 8cm long and 6 cm wide. What is the perimeter

If f (x) + = x-1, g (x) = x^2 - 1, an h (x) = x^2+1 find h (f (x))

Zeke bought a $2,300 bobsled on the installment plan. He made a $450 down payment, and he has to make monthly payments of $93.50 for the next two years. How much total interest will he pay?

if x represents the first, or smaller, of two consecutive even integers, express the sum of the two integers in terms of x

Translate the percent word problem in a equation: If 5 is increased to 8, the increase is what percent of the original number?

Explain the difference between 4 times the sum of x and y and the sum of 4 times x and u

Assume that 140 surveys are completed. Of those surveyed, 71 responded positively to effectiveness, 60 responded positively to side effects, and 65 responded positively to cost.

For the first 4 years of a pig's life, the weight w (in kilograms) of the pig approximately fits the formula w (t) = 2 + 14t, where t is the age of the pig in years.

What is the quotient of b/6a and ab/18?