Use problem solving strategies to solve the problem.The number of dogs and chickens on a farm add up to 12. The number of legs between them is 28. How many dogs and how many chickens are on the farm if there are at least twice as many chickens as dogs?
A. 6 dogs, 6 chickens
B. 2 dogs, 10 chickens
C. 4 dogs, 8 chickens
D. 3 dogs, 9 chickens
Answer: B
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There are initially 37 milligrams per deciliter of a drug in the bloodstream of a patient. The concentration of the drug shows a constant percentage decay of 6% per hour. ? A: Using C for the concentration, in milligrams per deciliter, of the drug after t hours, write a formula for C. ? B: What is the percentage decrease in concentration over any 4-hour period? ? C: Make a graph that shows the drug concentration over the first 20 hours. ? D: How long will it take for the concentration to decline by 24%? ? Round your answers to two decimal places if necessary. ?
What will be an ideal response?
Choose the best estimate from the list.
is approximately 1
, 2
, 2, 3.
A. 3
B. 1
C. 2
D. 2
Zinc Corporation is developing its cash budget for this month. Each month, the firm manufactures and sells $15,000 of products, and it pays $10,000 for wages, taxes, cost of goods sold, and other operating expenses. Zinc has nothing in its checking account even though its target cash balance is $8,000. What amount will Zinc show on the "bottom line" of its cash budget for this month? That is, what will be Zinc's cash position?
A. Zinc has surplus cash of $8,000. B. Zinc has a cash shortfall of $3,000. C. Zinc has surplus cash of $6,000. D. Zinc has a cash shortfall of $23,000. E. Zinc has surplus cash of $20,000.
Factor completely. If the polynomial cannot be factored, write "prime."x2 - 16x + 64
A. (x + 8)2 B. (x - 8)2 C. (x - 4)2 D. prime