Use the discriminant to determine the number and nature of the solutions to the quadratic equation. Do not solve the equation.x2 - 4x - 5 = 0
A. two real solutions
B. two nonreal solutions
C. exactly one real solution
Answer: A
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Evaluate the exponential expression.72 ? 32
A. 100 B. 441 C. 84 D. 58
Find the difference. Write the difference in lowest terms. 13 - 5
A. 7
B. 12
C. 8
D. 8
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
(log7 x + log7 y) - 5 log7 (x + 3)
A. log7 
B. log7 
C. log7 
D. log7 
Two woodworkers, Tom and Carlos, bring in $100 for making a table and $80 for making a chair. On average, Tom must work 3 hours and Carlos 2 hours to make a chair. Tom must work 2 hours and Carlos 6 hours to make a table. If neither wishes to work more than 42 hours per week, find the maximum income. Table Chair Time availableIncome ($) 100 80Tom's time (hr) 2 3 42Carlos's time (hr) 6 2 42
A. $1,560 B. $1,660 C. $1,160 D. $1,060 E. $1,260