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<span>Talia swims about 1.5 mph faster than Alina</span>
Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The number of singers is 
The sample size is 
The number the number of singers who are professional is k = 19
The proportion of professional singers is mathematically represented as

=> 
=> 
The percentage estimate of singers who are professional is


Answer:
C
Step-by-step explanation:
A 3x =\ x^3
B 12x - 10 =\ 14x-10
C 12x + 16x = 12x +16x