The percentage 
of children who are able to speak in at least single words by the age of ?t months can be approximated by the equation.
?
?
What percent of children are able to speak in at least single words by the age of 14 months? Round to the nearest percent.
?
A. 67%
B. 80%
C. 55%
D. 73%
E. 20%
Answer: B
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Find the rational number halfway between the two numbers in each pair. 
and 
A. 
B. 
C. 
D. 
Determine whether the equation has no solution, one solution, or infinitely many solutions.10k - 69 = 5(2k - 15)
A. Infinitely many solutions B. No solutions C. One solution
Determine whether the given equation is an identity.8x + 74 = 4(2x + 17)
A. Yes B. No
Malia buys a chocolate-strawberry-vanilla cake in Figure(i) for $14.00 . She cuts the cake into six 60° wedges as shown in Figure (ii). Malia likes chocolate twice as much as vanilla and likes vanilla twice as much as strawberry.
What is the value of piece 1 to Malia?
A. $4.00 B. $2.00 C. $3.00 D. $1.00 E. none of these