Use the quadratic formula to solve the equation.x2 + 18x + 70 = 0
A. -9 - 
, -9 + 
B. -18 + 
C. 9 - 
, 9 + 
D. 9 + 
Answer: A
Mathematics
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At what points is the given function continuous?f(x, y) = ex+y
A. All (x, y) satisfying x + y ? 0 B. All (x, y) C. All (x, y) ? (0, 0) D. All (x, y) in the first quadrant
Mathematics
Find the derivative of the function.y = 
A. y ' = 
B. y ' = 
C. y ' = 
D. y ' = 
Mathematics
Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 30 when x = 10;
Find y given x = 14.
A. k = - 3; y = - 42
B. k = 5; y = 70
C. k = 3; y = 42
D. k = 300; y = 
Mathematics
For the given polynomial P(x) and the given c, use the remainder theorem to find P(c).P(x) = x2 - 3x + 6; 2
A. 2 B. 7 C. -2 D. 4
Mathematics