Simplify the expression.8(y + 10) - 7
A. 8y + 3
B. 8y + 24
C. 18y - 7
D. 8y + 73
Answer: D
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Find an equation for the line that passes through the given point and satisfies the given conditions.P = (9, 9); perpendicular to v = 2i + 4j
A. y - 9 = 
(x - 2)
B. 2x + 4y = 54
C. 4x - 2y = 18
D. 2x + 4y = 20
Solve the problem.At a store, Sam bought 4 batteries, 19 60-watt light bulbs, 49 100-watt light bulbs, 11 picture-hanging kits, and a hammer. Jennifer bought 7 batteries, 5 100-watt light bulbs, and a package of tacks. Write the information as a 2 x 6 matrix.
A. 
B. 
C. 
D. 
Find all critical numbers for the function. State whether it leads to a local maximum, a local minimum, or neither.f(x) = x3+ 12x2 + 48x - 2
A. Local maximum at -4; local minimum at 4 B. Local minimum at -4 C. No local extrema D. Local maximum at -4
Let Q represents a mass of radioactive radium 
(in grams), whose half-life is 1,599 years. The quantity of radium present after t years is 
. Determine the quantity present after 500 years. Round to the nearest hundredth of a gram, if necessary.
a. 0 g b. 0.31 g c. 0.81 g d. 1.61 g e. 2 g