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11/3/11

Test 8 Section 9 - #16 (page 861)

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Tough one, right?  Let's start by drawing it: So the area of ABED is 2/3. We don't have an equation for the area of a shape like...
6/4/11

Practice problem #14, page 340

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This is a logic question really, but it's a pretty hard one by SAT standards. You know that a ( b  -  a ) = 0, which means either a =...
5/17/11

Test 4 Section 9 - #16 (page 613)

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Plug in. Say x = 2. Then y = 2 + 1/2 = 2.5. Now try your conditions: I. y ≠ x Yep, that's true. II. y is an integer. Nope, not...

Test 4 Section 9 - #15 (page 613)

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Plug in to solve this one. (Note, it doesn't matter if the equation doesn't work with the numbers you pick, since you're not ask...

Test 4 Section 9 - #10 (page 611)

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Tricky one. If Stacy is the 12th tallest, that means there are 11 people shorter than her. If she's the 12th shortest, that means there ...

Test 4 Section 9 - #7 (page 611)

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OK, you're going to have to do some tricky solving for this one. Start by solving for x : x -½  = ⅓ x ½  = 3 (negative exponent means...

Test 4 Section 9 - #1 (page 609)

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You can backsolve this one. Start with (C): If there are 8 girls on the bus, that means that there were 8 boys on the bus to start as well. ...

Test 4 Section 6 - #15 (page 597)

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Even though this is a grid-in question, we can actually plug-in to solve. That's because they don't ask us for the areas themselves,...

Test 4 Section 6 - #6 (page 594)

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This one works kinda like a ratio problem. The key is to recognize that if the ratio of white eggs to brown eggs is 2 to 3, then the ratio o...

Test 4 Section 3 - #18 (page 585)

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Big time plug-in here. Say x = 10, and z = 2. So the first shirt will cost $10, and each shirt after that will cost $10 - $2 = $8. Now say...
5/9/11

Test 2 Section 2 - #15 (page 456)

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This is a function question, which means you're going to need to follow directions very closely. Start by understanding the definition: ...

Test 5 Section 2 - #15 (page 642)

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As with any geometry question, your first step is to fill in EVERYTHING YOU KNOW. Because angles A and C are equal,  AB = BC . So ABC ...

Test 5 Section 2 - #14 (page 641)

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This one looks intimidating, but if you start plugging in you'll see the way pretty quickly. Start with the lowest ordered pair you c...
5/2/11

Test 5 Section 4 - #8 (page 652)

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This one is based on that all-important fact: parabolas are symmetrical! When they say f ( b ) = f (3), that's another way of saying tha...

Test 5 Section 2 - #17 (page 642)

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It's important to note that when the SAT tells you that a line passes through the origin, they're giving you a point on the line: (0...