Without graphing the function, state the shift(s) that are applied to the graph of 
to graph the given function. If the graph of 
must be rotated about the x-axis, state this.f(x) = x2 - 4
A. up 4 units
B. right 4 units
C. down 4 units
D. left 4 units
Answer: C
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Find the limit and determine if the function is continuous at the point being approached.
sin-1 
A. 
; no
B. 
; yes
C. 
; yes
D. Does not exist; no
In order to determine the effectiveness of a new vaccine that is alleged to cure "math anxiety," a study was conducted. One thousand volunteer college students enrolled in math courses across the U.S. were chosen. The 1000 students were broken up into two groups. Those enrolled in calculus courses were given the real vaccine. The students in developmental (remedial) math courses were given a fake vaccine consisting of sugared water. None of the students knew whether they were being given the real or the fake vaccine, but the researcher conducting the study knew. At the end of the semester the students were given a test that measured their level of math anxiety. The students in the treatment group showed significantly lower levels of math anxiety than those in the control group. On the
basis of this experiment the vaccine was advertised as being highly effective in fighting math anxiety.This study can best be described as a A. survey using stratified sampling. B. randomized controlled experiment. C. survey using quota sampling. D. controlled placebo experiment. E. census.
Perform the indicated operations and write the result in standard form.
- 
A. 
- 10i
B. 
i - 10
C. i(
- 10)
D. i(
+ 10)
Insert < or > to make the statement true.0 _____ -5
A. 0 > -5 B. 0 < -5