Solve the problem.The flow F of a fluid in a plane is illustrated below. At which point or points would 
point towards the reader, perpendicular to the page?
A. C
B. A
C. B
D. A and C
Answer: B
Mathematics
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Decide whether the ordered pair is a solution of the given system.(1, 4)3x + y = 72x + 3y = 14
A. No B. Yes
Mathematics
Solve the problem.Total profit is defined as total revenue minus total cost. R(x) and C(x) are the revenue and cost from the sale of x televisions. If 
and 
find the profit from the sale of 80 televisions.
A. $25,520 B. $7120 C. $19,120 D. $13,520
Mathematics
Find the following.Find -(-x) when x = - 
.
A. - 
B. 
C. -48
D. 48
Mathematics
Find the function value.Let f(x) = 3x. Find f(2).
A. 8 B. 9 C. 6 D. 27
Mathematics