Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. No, no
B. Yes, no
C. Yes, yes
D. No, yes
Answer: A
Mathematics
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Solve the problem.The sum of three numbers is -4. The first, minus the second, plus 3 times the third, is 2. The third, plus 2 times the first, plus the second, is -1. What are the numbers?
A. 3, 3, -5 B. No solution C. -3, 5, 2 D. 3, -5, -2
Mathematics
Solve the problem.Each time Paul gets paid, 3% of his pay check is deposited into his savings account. The amount of Paul's pay check is $500. How much money will he deposit into his savings account?
A. $15 B. $150 C. $14 D. $1500
Mathematics
Solve the problem.For the equation y = - 
cos(2x - 2?), identify (i) the amplitude, (ii) the phase shift, and (iii) the period.
A.
(i)  | (ii)  | (iii) ? |
B.
(i)  | (ii) ? | (iii) ? |
C.
| (i) 2 | (ii) 2? | (iii) 2? |
D.
| (i) 2 | (ii) ? | (iii) ? |
Mathematics
Round the number as requested.6,433 to the nearest hundred
A. 6,400 B. 6,410 C. 6,500 D. 6,300
Mathematics