Rewrite the number as a product using the power of 10 as a factor.420
A. 42 ? 101
B. 42 ? 102
C. 420 ? 101
D. 42 ? 100
Answer: A
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Simplify the expression. (Remember the order of operations.)-19 + 18 - 16 + (-7)
A. 8 B. -24 C. -10 D. -28
Solve the problem.The production level P of a factory during one time period is modeled by P(x, y) = Kx1/2y1/2 where K is a positive integer, x is the number of units of labor scheduled and y is the number of units of capital invested. If labor costs $4500/unit, capital costs $700/unit and the owner has $1,900,000 available for one time period, what amount of labor and capital would maximize production?
A. 422.2 units of labor and 2714.3 units of capital B. 211.1 units of labor and 1357.1 units of capital C. 1357.1 units of labor and 211.1 units of capital D. 206.5 units of labor and 1187.5 units of capital
For the given function f(x), find f-1(x) and graph the function and its inverse.f(x) = 
x
A. f(x) = 
x, f-1(x) = log5/2 x
f(x)
B. f(x) = 
x, f-1(x) = log5/2 x
f(x)
C. f(x) = 
x, f-1(x) = log5/2 x
f(x)
D. f(x) = 
x, f-1(x) = log5/2 x
| f-1(x) | f(x) |
Use the discriminant to determine whether the equation has two rational solutions, one rational solution, two irrational solutions, or two nonreal complex solutions. Do not actually solve.16x2 + 8x + 1 = 0
A. One rational solution B. Two irrational solutions C. Two rational solutions D. Two nonreal complex solutions