Math!!!

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Across
  1. 1. Divide x2 – 9x – 10 by x + 1
  2. 2. (A reading list for a course in world literature has 20 books on it. In how many ways can you choose four books to read?)
  3. 5. A biologist is researching a newly-discovered species of bacteria. At time t = 0 hours, he puts one hundred bacteria into what he has determined to be a favorable growth medium. Six hours later, he measures 450 bacteria. Assuming exponential growth, what is the growth constant "k" for the bacteria? (Round k to two decimal places.)
  4. 6. 2 +2x+4) Factor x3−8
  5. 7. Simplify sqrt[144]
  6. 8. Solve log2(x) = 4
Down
  1. 1. A citrus grower wants to ship a select grade of oranges that weigh from 8 to 9 ounces in gift cartons. Each carton will hold three dozen oranges, in 3 layers of 3 oranges by 4 oranges. The weight of an orange is related to its diameter by the formula w = d cubed over 4, where d is the diameter in inches and w is the weight in ounces. Cartons can be ordered in whole-inch dimensions. What size cartons should the grower order?
  2. 3. write the standard form of the polynomial of -7x+5x^4
  3. 4. Simplify log2(x) + log2(y)