Suppose a roast should be cooked for 45 minutes plus 10 more minutes for every pound the roast weighs. If a roast is properly cooked in 3 hours, how much did it weigh?

What has a product of 0.54?

Show that in any group of people, two of them have the same number of friends in the group. (Some important assumptions here: no one is a friend of him - or herself, and friendship is symmetrical-if x is a friend of y then y is a friend of x.)

72% of what number is 1080?

Which statement best describes (3 * 4) * 6 = 3 * (4 * 6) ? A : A number multiplied by 0 has a product of 0. B : The order of the factors is changed, but the product is the same. C: The grouping of the factors is changed, but the product is the same.

A bacteria population is 6000 at time t = 0 and its rate of growth is 1000 · 9t bacteria per hour after t hours. what is the population after one hour? (round your answer to the nearest whole number.)

What number gives a result of - 8 when 11 is subtracted from the quotient of the number and 6?

He product of a non-zero rational number and an irrational number can always be written as a) a fraction. b) a terminating decimal. c) a non-repeating, non-terminating decimal. d) a repeating decimal

Who has the right to levy taxes on the income of individuals and businesses by the ruling of the 16th Amendment of the Constitution that was signed into law in 1913? A. Congress B. The governor C. The president D. The Supreme Court

X - 7 = 18 isn't this 25

If the square of twice a number is 81, what is the number? I tried doing 2x^2=81 but that did not come out to the answer 4.5,-4.5