Use the vertical line test to determine whether y is a function of x.
A. Yes
B. No
Answer: A
Mathematics
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Solve the formula for the indicated letter.
Mathematics
Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this.ln (x - 3) + ln (x + 5) = ln 20
A. -7, 5 B. -5, 7 C. 7 D. 5
Mathematics
For the given functions f and g, find the requested function and state its domain.f(x) = 16 - x2; g(x) = 4 - xFind f + g.
A. (f + g)(x) = 4 + x; (-?, -4) ? (-4, ?) B. (f + g)(x) = x3 - 4x2 - 16x + 64; (-?, ?) C. (f + g)(x) = -x2 - x + 20; (-?, ?) D. (f + g)(x) = -x2 + x + 12; (-?, ?)
Mathematics
Translate the phrase into a mathematical expression. Use x to represent "a number". The quotient of a number and 3
A. 
B. 3x
C. x - 3
D. 
Mathematics