Expand. Assume that all variables represent positive real numbers.logb 
A. logb x + logb y8 - logb z7
B. logb x + 8 logb y - 7 logb z
C. logb x + 8 logb y + 7 logb z
D. logb x + logb y8 + logb z7
Answer: B
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When the graph of directed distance is a horizontal line, what can be said about the graph of velocity?
A. It lies above the horizontal axis. B. It lies below the horizontal axis. C. It lies on the horizontal axis. D. The graph of velocity is increasing.
Multiply and simplify.
? 
A. 5m
B. 
C. 
D. 10
Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $200 Amount of tax: $13.00
A. 8.5%, $213.00 B. 7.5%, $213.00 C. 6.5%, $213.00 D. 0.65%, $213.00
Answer the question.When using the substitution or elimination method to solve a system of two equations, you end up with an equation stating 
What does this indicate to you about the system of equations?
What will be an ideal response?