Solve.The space in a landfill decreases with time as given by the function F(t) = 320 - 40 log5 (4t + 1), where t is measured in years. How much space is left when t = 31?
A. 200
B. 440
C. 240
D. 110
Answer: A
Mathematics
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The angles of the triangles shown in the illustration are a = 52 o , b = 52 o . The triangles are congruent because of what property?
A. SAS property B. ASA property C. SSS property
Mathematics
Solve the problem.An item is originally priced to sell for $175 and is marked down 20%. The store takes off an additional 25%, and a customer has a coupon for 10%. What is the total percent reduction for this item? Give the net decimal equivalent and total percent reduction.
A. 0.46; 54% B. 0.5; 55% C. 0.54; 46% D. 0.55; 50%
Mathematics
Evaluate the expression by hand.(4-1/3)-9
A. 64
B. 
C. - 
D. -64
Mathematics
Determine whether the equation in one variable is linear.7x = 12x3
A. linear B. not linear
Mathematics