Solve the problem.Let 
be the cost to produce x units of a product, and let 
be the revenue. Find the maximum profit.
A. $6
B. $11
C. $8
D. $9
Answer: C
Mathematics
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Calculate. Write answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.There are 9 books on a reading list for English I. Students must select 4 books to read from this list. In how many ways can the 4 books be selected?
A. 3024 B. 126 C. 146 D. 116
Mathematics
Provide an appropriate response.Light with a wavelength of 0.0005 meters is in the infrared portion of the electromagnetic spectrum. Write 0.0005 in scientific notation.
A. 5 × 104 B. 5 × 10-4 C. 5 × 10-3 D. 5 × 10-5
Mathematics
Solve the problem.A state park charges
per day or fraction of a day to rent a tent site, plus a fixed 
park maintenance fee. Let T(x) represent the cost to stay in a tent site for x days. Find 
A. $98.00 B. $91.00 C. $111.00 D. $104.50
Mathematics