Simplify the rational expression.
A. 
B. a + 7
C. a - 7
D. 
Answer: B
Mathematics
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Provide an appropriate response.Find a cofunction equivalent to tan 16°.
A. cot 74° B. cot 16° C. cot 106° D. sec 16°
Mathematics
Determine whether the equation is a function.y2 = 9 - x2
A. function B. not a function
Mathematics
Provide an appropriate response.If a fraction with denominator 
must be written as an equivalent fraction with denominator 
then the original fraction must be multiplied by 
in both the numerator and the denominator.
A. True B. False
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 
B. - 
C. - 
D. 
Mathematics