Solve the problem.Dave bought 15 packets of cookies for $46.50 total. Each packet of cookies contains 10 cookies. Find the cost of each cookie to the nearest tenth of a cent.
A. 31.0¢
B. 32.1¢
C. 3.1¢
D. 0.3¢
Answer: A
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Find the quotient q and a remainder r when a is divided by b, and write the result in the form a = bq + r of the division algorithm for the given choices of a and b.a = 45,375, b = 48
A. 45,375 = (48)(945) + 11 B. 45,375 = (48)(945) C. 45,375 = (48)(15) D. 45,375 = (48)(945) + 15
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 5x + 4y = 86x - 3y = 33
A. (-4, 3) B. (3, -4) C. (4, -3) D. (-3, 4)
Solve the system.2w - 6y + z = 10-w + x + 3y - z = -45w - x + 3z = -21 x + 2y - z = -5
A. ( 0, -4 , 1, 5) B. (-4, 1, -3, 0) C. (-8, 0, -4 , 1) D. (4, 3, -3, -1)