Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 2
B. 
C. 
D. 
x
Answer: C
Mathematics
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Use a double-angle identity to find the exact value of the expression.2 cos2 75° - 1
A. - 
B. 
C. - 
D. 
Mathematics
Determine whether the equation defines y as a function of x. x = y2
A. function B. not a function
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The following data show the list price, x, in thousands of dollars, and the dealer invoice price, y, also in thousands of dollars, for a variety of sport utility vehicles. Find a linear equation that approximates the data, using the points (16.5, 16.1) and (20.0, 18.3). 
A. y = 0.629x + 5.73 B. y = 1.59x - 9.11 C. y = 1.59x - 10.2 D. y = 0.629x + 6.38
Mathematics