Evaluate.i23 + i19
A. -2i
B. 2
C. -2
D. 0
Answer: A
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Solve.An investment is worth $2571 in 1992. By 1997 it has grown to $4956. Let y be the value of the investment in the year x, where x = 0 represents 1992. Write a linear equation that relates the value of the investment, y, to the year x.
A. y = 
x + 2571
B. y = 477x + 2571
C. y = -477x + 7341
D. y = -477x + 2571
Write a numerical expression for the phrase and simplify it.8 less than the difference between 20 and -3
A. 3 - 20 - 8; -31 B. [20 - (-3)] - 8; 15 C. -3 - 20 - 8; -31 D. 8 - 20 - (-3); -9
Graph the linear equation. Give the x- and y-intercepts.x - y = 2
A. x-intercept: (- 2, 0); y-intercept: (0, - 2)
B. x-intercept: (- 2, 0); y-intercept: (0, 2)
C. x-intercept: (2, 0); y-intercept: (0, 2)
D. x-intercept: (2, 0); y-intercept: (0, - 2)
Solve the problem.A rectangular metal tank with an open top is to hold 256 cubic feet of liquid. What are the dimensions of the tank that require the least material to build?
A. 2 ft by 2 ft by 64 ft B. 8 ft by 8 ft by 4 ft C. 2 ft by 16 ft by 4 ft D. 16 ft by 4 ft by 4 ft