Provide an appropriate response.Using the rules for the order of operations, what should be done first when evaluating the expression 
A. Evaluate64
B. Evaluate104
C. Add 10 + 6
D. Evaluate63
Answer: D
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Graph the function.y = 4 cot (x + 
) + 1 
A. 
B. 
C. 
D. 
Graph the system of inequalities.
A. 
B. 
C. 
D. 
Find a polar equation for the conic. A focus is at the pole.e = 
; directrix is perpendicular to the polar axis 4 to the left of the pole
A. r = 
B. r = 
C. r = 
D. r = 
A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by 
where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question.The concentration of hydrogen ions in a solution is approximately 10-7.5. What is the pH of the solution? Is the solution an acid or a base?
A. The pH is -7.5. The solution is a base. B. The pH is -7.5. The solution is an acid. C. The pH is 7.5. The solution is an acid. D. The pH is 7.5. The solution is a base.