Verify that each equation is an identity.sin(4u) = 2 sin(2u) cos(2u)
What will be an ideal response?
sin(4u) = sin [2(2u)] = 2 sin(2u) cos(2u).
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Find y in terms of x.
= 
+ x, x > 0, curve passes through (2, 3)
A. y = 
+ 
B. y = - 
+ 
+ 
C. y = - 
+ 
D. y = 
+ 
+ 
Determine whether the expression is a polynomial. If it is, state how many terms and variables the polynomial contains. Then state its degree.x + 
A. No B. Yes; 1; 1; 1 C. Yes; 2; 1; -1 D. Yes; 2; 1; 1
Solve the problem.Find the APR for a 30-year, $250,000 mortgage at 9% interest compounded monthly and two discount points.
A. 9.25% B. 9.10% C. 9.05% D. 12%
Find the x- and y-intercepts of f.f(x) = (x - 3)(x - 4)
A. x-intercepts: -3, -4; y-intercept: -7 B. x-intercepts: 3, 4; y-intercept: -7 C. x-intercepts: 3, 4; y-intercept: 12 D. x-intercepts: -3, -4; y-intercept: 12