Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 4x, g(x) = 
A. No, no
B. Yes, yes
C. Yes, no
D. No, yes
Answer: B
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Solve the system by graphing.
x - 
y = 5
x + 
y = 12
A. (3, 4) B. (3, 1) C. (4, -3) D. (4, 3)
Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.$1430 is compounded annually at 10%. Find the total amount in the account after 6 years.
A. $2303.03 B. $2145.00 C. $2533.39 D. $2288.00
Provide an appropriate response.Find all of the higher-order derivatives of x(t) = x4 - 3x2 - x. Use your graphing calculator to graph x(t) and x'(t) on the same axes. Verify that when x(t) is decreasing (sloping downward), the value of x'(t) is negative. Repeat this for x'(t) and x''(t), for x''(t) and x'''(t), and for x'''(t) and x(4)(t).
What will be an ideal response?
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. {(7, -3)} B. {(7, -4)} C. ? D. {(6, -3)}