_________________________ preserves parallelism
(a) A reflection.
(b) A rotation.
(c) A glide reflection.
(d) A similitude.
(e) All of (a), (b) and (c) are correct.
(f) All of (a), (b), (c) and (d) are correct.
(c) A glide reflection.
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A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = 
A. 1, 
, 
, 
, 
B. 1, 
, 
, 
, 
C. 1, 
, 
, 
, 
D. 1, 
, 
, 
, 
Solve.In order for a chemical reaction to take place, the Fahrenheit temperature F of the reagents must be at least 154.61° F. At what Celsius temperatures, C, will the reaction occur? 
Round to the nearest hundredth of a degree, if necessary.
A. At temperatures less than 310.3° Celsius B. At temperatures less than or equal to 68.12° Celsius C. At temperatures greater than or equal to 68.12° Celsius D. At temperatures greater than or equal to 310.3° Celsius
Two ships leave port at the same time. Ship A sails north at a speed of 24 mph while ship B sails east at a speed of 36 mph. ? a. Find an expression in terms of the time t (in hours) giving the distance between the two ships. b. Using the expression obtained in part (a), find the distance between the two ships 1 hr after leaving port. Round the answer to the nearest tenth. ?
A. 
and 43.3
B. 
and 47.3
C. 
and 43.3
D. 
and 39.3
E. 
and 39.3
Determine whether the sequence is geometric. If so, find the common ratio. –3, –6, –12, –24,...
a. –2
b. 
c. 2
d. not geometric