Decide whether the relation is a function.{(-6, 7), (-1, 4), (3, 7), (8, -4)}
A. function
B. not a function
Answer: A
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Solve the problem.The numbers on the right in the equations below are the hexagonal numbers. Use the sequence of equations to find a formula for hn, the nth hexagonal number. 1 = 1 1 + 5 = 6 1 + 5 + 9 = 15 1 + 5 + 9 + 13 = 28 ..............
A. hn = (n - 1)(2n + 1) B. hn = 2n(n - 1) C. hn = n(2n - 1) D. hn = n(2n + 1)
Provide an appropriate response.Perform the indicated operation. Express as an ordinary number. 57 ? 100
Fill in the blank(s) with the appropriate word(s).
Solve using a system of three linear equations.A deli sells three sizes of turkey sandwiches: the small turkey sandwich contains 6 ounces of meat and sells for $3.50; the regular turkey sandwich contains 9 ounces of meat and sells for $4.00; and the large turkey sandwich contains 13 ounces of meat and sells for $4.50. A customer requests a selection of each size for a reception. She and the manager agree on a combination of 50 sandwiches made from 27 pounds 4 ounces of turkey for a total cost of $196. How many of each size sandwich will be in this combination? (Note: 1 pound = 16 ounces)
A. 20 small sandwiches, 16 medium sandwiches, 14 large sandwiches. B. 18 small sandwiches, 22 medium sandwiches, 10 large sandwiches. C. 16 small sandwiches, 28 medium sandwiches, 6 large sandwiches. D. 14 small sandwiches, 18 medium sandwiches, 18 large sandwiches.
Use a half-angle formula to find the exact value of the expression.sin 
A. - 
B. 
C. - 
D. 
