Solve the application problem.A manufacturer determines that the profit in dollars for manufacturing n units is 
(Assume that n is a positive integer) How many units are produced when the profit is $420?
A. 45 units
B. 40 units
C. 5 units
D. 50 units
Answer: B
Mathematics
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(Round to four decimal places.)
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Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis 
Use this law to solve the problem.Find R if 
and 
A.
| 1 + i |
B.
+ 
iC.
 + i |
D.
1 +  i |
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Use Heron’s formula to find the area of the triangle with sides of length 12, 18, and 24.
(a) 104.6 (b) 204.6 (c) 206.4 (d) 401.2 (e) none of these
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Translate the question into a proportion. Do not solve.9% of 46.8 is what number?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
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