Given f(x) and g(x), find the following.f(x) = x2 + 7x and g(x) = x + 3. Find (fg)(x) and (fg)(5).
A. x2 + 13x + 30; 120
B. x3 + 3x2 + 7x + 21; 256
C. x3 + 10x2 + 21x; 480
D. x3 + 21x; 230
Answer: C
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Write the phrase as a mathematical expression. Use x as the variable.Some number increased by 146
A. 146x B. 146 C. x + 146 D. x - 146
Solve for x, if 
. Write your answers in exact values only.
?
sin x + 2sin x cos x = 0
?
A. 
, 
, 
, 
B. 0, 
, 
, 
C. , , 
, 
D. , , 
, 
E. 0, , 
, 
Find the limit of the following sequence.
?
?
A. 
B. 
C. 
D. 
E. The limit does not exist.
Solve the problem by using addition, subtraction, multiplication, or division as needed.A spreadsheet contains 608 entries in a rectangular array which has 32 rows. How many entries are in each row?
A. 19,456 entries per row B. 29 entries per row C. 19 entries per row D. 576 entries per row