Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 5
+ 7
A. 9
B. 12
C. -19
D. 19
Answer: D
Mathematics
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Express the number in scientific notation.8200
A. 0.82 × 102 B. 82 × 104 C. 8.2 × 103 D. 82 × 103
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
Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 8x - 5 = 0
A. {-4 ± 2
}
B. {4 ± 
}
C. {-1 ± 
}
D. {-4 ± 
}
Mathematics
Solve.A regular pentagon has a side length of 8 m. Find its perimeter.
A. 48 m B. 40 m C. 32 m D. not enough information given
Mathematics