Estimate the value as a whole number or as a mixed numeral where the fractional part is 
.83
? 28
A. 2,324
B. 2,314
C. 2,425
D. 2,425
Answer: A
Mathematics
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Evaluate.If 
and 
, evaluate 
A. 7 B. -78 C. 6 D. 19
Mathematics
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.(x-7)-3
A. 
B. 
C. -x10
D. x21
Mathematics
Find all values of ?, if ? is in the interval [0, 360°) and has the given function value.cot ? = 1
A. 135° and 225° B. 45° and 225° C. 45° and 315° D. 225° and 315°
Mathematics
Use an appropriate identity to find the exact value of the expression.sin (255°)
A. 
B. 
C. 
D. 
Mathematics