Solve the equation.0.1(30) + 0.5x = 0.3(30 + x)
A. 40
B. 15
C. 30
D. 20
Answer: C
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Determine whether the statement is true or false.The number 213 - 1 is an example of a Mersenne prime.
A. True B. False
Use a graph to estimate the solution.The cost, T, in hundreds of dollars, of tuition at one community college is given by 
where c is the number of credits for which a student registers. Graph the equation and use the graph to estimate the cost of tuition if a student registers for 11 credits.
A. About $2300 B. About $1675 C. About $1500 D. About $2700
Solve the equation.
= 
A. {
, - 
}
B. {- 
, 
}
C. - 
D. ?
Find the domain and range of the inverse of the given function.f(x) = 8 - x2 ; x ? 0
A. Domain: [0, ?); range: (-?, 8] B. Domain: (-?, 8]; range: all real numbers C. Domain: [8, ?); range: [0, ?) D. Domain: (-?, 8]; range: [0, ?)