Solve the equation first by clearing the fractions.
x - 
x = 3
A. -21
B. 24
C. -24
D. 21
Answer: C
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Solve the problem.The average height of a boy in the United States, from birth through 60 months, can be modeled by 
where y is the average height, in inches, of boys who are x months of age. What would be the expected difference in height between a child 49 months of age and a child 16 months of age?
A. 10.7 in. B. 8.7 in. C. 48.9 in. D. 20.3 in.
Find a general term an for the geometric sequence.a1 = - 
and r = -9
A. an = - 
- 
(n - 1)
B. an = 
n-1 + 
C. an = - 
? (-9)(n-1)
D. an = - 
+ 
(n - 1)
Find the area of the SAS triangle ABC. If necessary, round the answer to two decimal places.A = 30°, b = 10 yd, c = 9 yd
A. 38.97 sq yd B. 40.97 sq yd C. 20.5 sq yd D. 22.5 sq yd
Find the sum of the angle measures for the given regular polygon.
A. 540° B. 800° C. 720° D. 360°