Easiest option: plug in the numbers. Doing so, you will see that Answer 4 is the only choice that ends with the true statement that 1/3=1/3.
Substitute 2 for the variable and solve.
Remember $7.50 is every 30 minutes, so that's the equivalent of $45 for the three hours plus the $25 flat fee.
20r+10v=100
20v=170-10r
A10r 10r+20v=170
20r+10v=100
+ 10r+20v=170
30r+30v=270
D30 r+v=9
A=lw
A=6*8=48 feet
A=10*12=120 feet
10-6=4
12-8=4
She will have to increase each side by four feet, answer 1.
C is the number of complaints. x represents the number of years since 1995, so it can't be Answers 1 and 2. Since the complaints are growing, it can't be Answer 4 either. Process of elimination.
Simply plug in the options. Start with Answer 4 since the sum is a larger number. It will get you to the right answer more quickly.
Answers 2 and 4 can be eliminated right away because they add instead of take away window space. From there, Answer 3 can also be eliminated because you're trying to isolate the value of d.
Plug in the options. Start with your negatives since the end result is negative. That should help you arrive at Answer 4 on your first or second try.
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SAT Practice Test #2