Determine whether the variation model is of the form 
or 
and find k. Then write a model that relates y and x.
x
5
10
15
20
25
y
-1.5
-3
-4.5
-6
-7.5
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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The function f(x) changes value when x changes from x0 to x0 + dx. Find the approximation error 
. Round your answer, if appropriate.f(x) = x2, x0 = 9, dx = 0.06
A. 1.0236 B. 0.0036 C. 0.0072 D. 0.0018
Mathematics
R1 = 500 ê, R2 = 1500 ê, RL = 2000 ê, and E = 15 V. Find the IL.
a. 4.74 mA
b. 5.25 mA
c. 7.81 mA
d. 11.5 mA
e. 30.0 mA
Mathematics
Find sec ? if 
and ? terminates in QIII.
What will be an ideal response?
Mathematics
Find the unknown value in the percent proportion 
Round to the nearest tenth, if necessary.part = 76, percent = 30
A. whole = 253.3 B. whole = 25.3 C. whole = 22.8 D. whole = 2533
Mathematics