Solve the equation.log7x = -2
A. 128
B. 
C. 
D. 49
Answer: B
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Solve the problem using determinants.Linear systems occur in the design of roof trusses for new homes and buildings. The simplest type of roof truss is a triangle. The truss shown in the figure is used to frame roofs of small buildings. If a force of 125 pounds is applied at the peak of the truss, then the forces or weights W1 and W2 exerted parallel to each rafter of the truss are determined by the following linear system of equations. 
(W1 + W2) = 125W1 - W2 = 0Find W1 and W2.
A. W1 = 72.17 lb; W2= 62.5 lb B. W1 = -72.17 lb; W2= -72.17 lb C. W1 = 41.67 lb; W2= 41.67 lb D. W1 = 72.17 lb; W2= 72.17 lb
Find the total surface area and the volume of the following right prism. (Round to the nearest tenth.)
A. T = 8177 in.2, V = 48,400 in.3 B. T = 5977 in.2, V = 48,400 in.3 C. T = 8177 in.2, V = 47,300 in.3 D. T = 5977 in.2, V = 47,300 in.3
Solve.Let's imagine that in 2001, a surgeon performs the first brain transplant, the only transplant performed that year. If in 2010, there are 1343 brain transplants, find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = e0.8, where t is the number of years after 2001. B. N(t) = e0.8t, where t is the number of years after 2001. C. N(t) = 1343e0.8t, where t is the number of years after 2001. D. N(t) = e0.8t, where t is the number of years after 2010.
Find either a linear or an exponential function that models the data in the table.
A. f(x) = 
x + 2
B. f(x) = 6x + 2
C. f(x) = 4(2)x
D. f(x) = 2(4)x