Calculate the arc length of the indicated portion of the curve r(t).r(t) = 3ti + 
j + 
k; -5? t ? -1
A. 100
B. -150
C. 20
D. -30
Answer: C
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Solve the problem.What conditions, when present, are sufficient to conclude that a function f(x) has a limit as x approaches some value of a?
A. The limit of 
as 
from the left exists, the limit of 
as 
from the right exists, and these two limits are the same.
B. The limit of 
as 
from the left exists, the limit of 
as 
from the right exists, and at least one of these limits is the same as f(a).
C. f(a) exists, the limit of 
as 
from the left exists, and the limit of 
as 
from the right exists.
D. Either the limit of 
as 
from the left exists or the limit of 
as 
from the right exists
Use a calculator to find the function value. Give your answer rounded to seven decimal places, if necessary.sin (-34°20')
A. -0.5640066 B. -0.5620834 C. -0.5562956 D. -0.5543603
Find the sum.-9 + 2
A. 11 B. 7 C. -7 D. -11
Find the amount that will be in an account, given the stated conditions.P = $1000, t = 8, r = 4% compounded annually
A. $1315.93 B. $1368.57 C. $368.57 D. $1423.31