Solve by graphing.The cost y (in hundreds of dollars) of tuition at one community college is given by the linear equation 
where x is the number of credits for which a student registers. Graph the equation and use the graph to estimate the cost of tuition if a student registers for 14 credits. 
A. $2900
B. $2500
C. $1700
D. $1950
Answer: D
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Form a tiling from the given figure using translations and reflections.
What will be an ideal response?
Simplify the expression.
A. 
B. 
C. 
D. 
Solve the problem.The function f models the population of Country X from 1991 to 1998. The graphs of f and the horizontal line y = 345 are shown in the figure. Use the graphs to determine when there was (i) a population equal to 345 million and (ii) a population of 345 million or less. 
A. between 1994 and 1998; earlier than 1994 B. 1994; between 1991 and 1994 C. 1994; after 1994 D. 1995; between 1991 and 1995
Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 4.7 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 4.47t B. (S ? d)(t) = 7.94t C. (S ? d)(t) = 3.53t D. (S ? d)(t) = 2.59t