Solve the given applied problem.In a particular classroom with 38 students, the rate y at which a rumor spreads is related to the number of people x who have heard the rumor according to the expression 
Determine how many people will have heard the rumor when the spread of the rumor is at its greatest.
A. -31
B. 114
C. 19
D. 69
Answer: C
Mathematics
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Solve the problem.If a number is tripled and then added to itself, the result is the same as the number doubled plus 22. Find the number
A. 33 B. 55 C. 11 D. 22
Mathematics
Solve the problem.John owns a hotdog stand. He has found that his profit is represented by the equation 
, with P being profits and x the number of hotdogs. How many hotdogs must he sell to earn the most profit?
A. 40 hotdogs B. 49 hotdogs C. 39 hotdogs D. 24 hotdogs
Mathematics
Find the solution to the system of equations by substitution.
x - y = - 
x + 8y = -4
A. (0, -4) B. (4, 0) C. (-4, 0) D. (0, 4)
Mathematics
Simplify. Express the answer using positive exponents.
A. 
B. z13
C. z3
D. 
Mathematics