Solve.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being the profit in dollars, and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 25 hotdogs
B. 40 hotdogs
C. 41 hotdogs
D. 50 hotdogs
Answer: B
Mathematics
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Find the coordinates of the vertex and the direction of opening of each parabola.y = (x + 2)2 + 7
A. (7, -4) opens downward B. (-2, 7) opens upward C. (-7, 2) opens upward D. (7, -2) opens downward
Mathematics
Solve.
(x - 4) > 
(5x + 4)
A. 
B. 
C. 
D. 
Mathematics
Subtract.5 - 19
A. 14 B. 24 C. -24 D. -14
Mathematics
Solve.Wind resistance or atmospheric drag tends to slow down moving objects. Atmospheric drag varies jointly as an object's surface area A and velocity v. If a car traveling at a speed of 60 mph with a surface area of 36 ft2 experiences a drag of 345.6 N (Newtons), how fast must a car with 45 ft2 of surface area travel in order to experience a drag force of 460.8 N?
A. 64 mph B. 61 mph C. 66 mph D. 69 mph
Mathematics