Answer the question or solve the problem.If a ? b, is it always true that -2a ? -2b? Explain.
What will be an ideal response?
No..Multiplying an inequality by a negative number requires reversing the inequality symbol. (Explanations will vary.)
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Solve.A standard train ticket in a certain city costs 
per ride. People who use the train also have the option of purchasing a frequent rider pass for 
each month. With the pass, a ticket costs only
per ride. Use an inequality to determine the number of train rides in a month for which purchasing the monthly pass is more economical than purchasing the standard train ticket.
A. 21 or more times B. 23 or more times C. 22 or more times D. 24 or more times
Solve the problem.The list price of a car is $19,789. The manufacturer offers a rebate of $681. What is the final price of the car?
A. $19,008 B. $20,470 C. $20,370 D. $19,108
Solve the equation for the specified variable.
+ 
= c for b
A. b = 
- a
B. b = 
C. b = 
D. b = ac - 
Change the exponential expression to an equivalent expression involving a logarithm.65 = 7776
A. log6 7776 = 5 B. log7776 6 = 5 C. log1/5 7776 = 6 D. log5 7776 = 6