Solve the problem.A thermometer reading 
is placed inside a cold storage room with a constant temperature of 
If the thermometer reads 
in 7 minutes, how long before it reaches 
Round your answer to the nearest whole minute.
A. 5 min
B. 10 min
C. -8 min
D. 19 min
Answer: D
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Solve the problem.Jane wants to buy a photocopier. The salesman has the following information on 3 models. If all 3 are used, a specific job can be done in 50 minutes. If copier A operates for 20 minutes and copier B for 50 minutes, one-half the job is finished. If copier B operates for 30 minutes and copier C for 80 minutes, three-fifths of the job is done. Which is the fastest copier, and how long does it take for this copier to finish the whole job?
A. B is fastest; 100 min B. C is fastest; 120 min C. C is fastest; 100 min D. A is fastest; 120 min
Find the area of the circle. Use ? ? 3.14 and round to the nearest hundredth.circumference = 96.2 in.
A. 734.44 in2 B. 732.44 in2 C. 738.44 in2 D. 736.44 in2
Find the circumference and area of the circle. Approximate each value to the nearest tenth when appropriate.radius = 2.3 cm
A. C = 7.2 cm, A = 66.4 cm2 B. C = 14.4 cm, A = 16.6 cm2 C. C = 7.2 cm, A = 28.9 cm2 D. C = 14.4 cm, A = 14.4 cm2
Write the fraction as an equivalent fraction with the given denominator.
with a denominator of 18
A. 
B. 
C. 
D. 