Which method should be used to solve the system? Explain your answer, including a description of the first step. x2 - 7y2 = 910x2 + 9y2 = 100
What will be an ideal response?
Either method may be used. Elimination may be used since the equations have the same types of terms (x2, y2, constant). If elimination is used, then the first equation should be multiplied by 10 or -10. Substitution may be used efficiently, since a coefficient of the first equation is 1. If substitution is used, then the first equation should be solved for x2.
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Suppose that the functions f and g and their derivatives with respect to x have the following values at the given values of x. Find the derivative with respect to x of the given combination at the given value of x.
1/f2(x), x = 4
A. - 
B. - 
C. - 
D. 
Find functions f and g so that F(x) = (f ? g) (x).F(x) = 
A. f(x) = 
, g(x) = - 
B. f(x) = 
, g(x) = x2 - 4
C. f(x) = 
, g(x) = x2 - 4
D. f(x) = 
, g(x) = x - 4
Evaluate the combination.C(29, 1)
A. 2 B. 29 C. 29! D. 29! - 10
Calculate.
Enter your answer as a(eb ± ec). Any fractions in reduced form 
.
What will be an ideal response?