Determine whether the equation defines y as a function of x. -4x + x2 + 28 = y
A. function
B. not a function
Answer: A
Mathematics
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Solve the problem.The temperature in Verlander is modeled by 
where T(x) is the temperature in degrees Fahrenheit on day x, with 
representing January 1 and 
representing December 31. Find the temperature on May 20.
A. 72°F B. 83°F C. 70°F D. 64 °F
Mathematics
For the function f, construct and simplify the difference quotient 
.f(x) = 
A. - 
B. 
C. 
D. 
Mathematics
Solve the equation by multiplying both sides by the LCD.
= 1 + 
A. {8} B. {-5, 8} C. {6, -8} D. {-6, 8}
Mathematics
Perform the indicated operation. Write the result in standard form.(5 + 9i)(3 - 9i)
A. 96 + 18i B. -81i2 - 18i + 15 C. -66 + 72i D. 96 - 18i
Mathematics