Multiply.(9y + x)(9y - x)
A. 81y2 - 18xy - x2
B. 81y2 - x2
C. 18y2 - x2
D. 81y2 + 18xy - x2
Answer: B
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Given that p and q each represents a simple statement, write the indicated compound statement in its symbolic form.p: They set the alarm. q: They get up on time.They set the alarm or they get up on time.
A. p ? ~ q B. p ? q C. p ? q D. p ? q
Solve by graphing.
A. (-3, 4) B. (-4, 3) C. Infinitely many solutions D. No solution
Solve the problem.The swim coach keeps a log for the number of miles travelled round trip to swim meets: 18, 19, 33, 52, 60, 62, 86. Find the median number of miles travelled.
A. 33 miles B. 47 miles C. 52 miles D. 60 miles
Solve the problem.At a private arts and science academy, in addition to tuition, the school charges for lab fees and supplies as shown in the table below.
Let f(n) be the per-student charge (in dollars) for lab fees and supplies for nth grade; kindergarten is represented by 
A model for this situation is 
Estimate for what grade the per-student charge for lab fees and supplies is $21.
A. 4th grade B. 1st grade C. 2nd grade D. 3rd grade