Add or subtract. Express the answer as a mixed number.
A. 1
B. 12
C. 12
D. 11
Answer: B
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Factor the polynomial completely. If the polynomial cannot be factored, write "prime."384 - 6x2
A. prime B. 6(x - 8)2 C. 6(x + 8)(x - 8) D. 6(8 + x)(8 - x)
Solve the problem. Give an exact answer and an approximation to the nearest tenth.The diagram below shows the side view of a plan for a slanted roof. Find the unknown length in this roof plan.
A. 
ft ? 7.1 ft
B. 
ft ? 16.2 ft
C. 
ft = 130.5 ft
D. 
ft ? 4.6 ft
Find the cross-product and determine whether the proportion is true or false.
= 
A. 0.288 ? 0.36; false B. 0.24 ? 0.432; false C. 0.288 = 0.288; true D. 0.36 = 0.36; true
Solve the problem.In a town whose population is 3000, a disease creates an epidemic. The number of people, N, infected t days after the disease has begun is given by the functionN(t) = 
. Find the number of infected people after 10 days.
A. 2737 people B. 2000 people. C. 142 people D. 1000 people