Solve the problem.To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by 1.8 and then add 32 to the result. Find a linear equation to convert from degrees Celsius to degrees Fahrenheit. Use this function to convert 39° C to °F.
A. 93.2°F
B. 89.9°F
C. 97.5°F
D. 102.2°F
Answer: D
Mathematics
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Find y".y = 
4
A. - 
2 + 
3
B. 
2 + 
3
C. - 
3
D. 12 
2
Mathematics
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where H+ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 5.92 B. 6.92 C. 6.08 D. 5.08
Mathematics
Use a fraction to represent the shaded area of the figure.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.Let f(x) = 
- 7. Find all x for which f(x) = 9.3.
A. ? B. {-16.3, 16.3} C. {-16.3, 2.3} D. {-2.3, 2.3}
Mathematics