Solve the problem.Junior high classes of 30 students each met in the cafeteria to take achievement tests. If exactly 6 students sat at each table and 30 tables were used, how many classes took the tests?
A. 6 classes
B. 9 classes
C. 8 classes
D. 19 classes
Answer: A
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Convert the angle to degrees, minutes, and seconds; or to decimal degrees (and round your result to the nearest hundredth of a degree).315°47'30''
A. 315.85 B. 315.79 C. 315.75 D. 315.80
Determine whether the graph of the equation is a circle, parabola, ellipse, or hyperbola. Do not graph.9y2 + 4x2 = 36
A. parabola B. ellipse C. hyperbola D. circle
Solve. Write the answer as a mixed number in simplest form.A female tiger had 4 cubs. They weighed 2
, 2
, 3
, 4
pounds, respectively. What was the average weight of a cub? (Recall that the average of a list of numbers is their sum divided by the number of items in the list.)
A. 
lb
B. 3
lb
C. 2
lb
D. 2
lb
Solve the problem.The cost of owning a home includes both fixed costs and variable utility costs. Assume that it costs $2061 per month for mortgage and insurance payments and it costs an average of $3.23 per unit for natural gas, electricity, and water usage. (i) Determine a linear function that computes the annual cost of owning this home if x utility units are used. (ii) What does the y-intercept on the graph of the function represent?
A. y = -3.23x + 2061; y-intercept, 2061, represents the minimum cost of owning the home without spending anything on utilities. B. y = -3.23x + 24,732; y-intercept, 24,732, represents the minimum cost of owning the home for 12 months without spending anything on utilities. C. y = 3.23x + 2061; y-intercept, 2061, represents the minimum cost of owning the home without spending anything on utilities. D. y = 3.23x + 24,732; y-intercept, 24,732, represents the minimum cost of owning the home for 12 months without spending anything on utilities.