Math Questions

Test Preparation SAT Preparation
1

<p>3, 5, -5...</p>

<p>the first term in the sequence of numbers shown above is 3. each even-numbered term is 2 more than the previous term and each odd-numbered term, after the first is -1 times the previous term. For example the second term is 3+2, and the third term is (-1) x 5 what is the 55th term of the sequence?</p>

<p>A-5
B -3
c -1
d 3
e 5</p>

<p>The graph shows Elina's heigh from the age of 6 to the age of 12. Elina's height at the age of 12 was what percent greater than her height at the age of 6?</p>

<p>A 15
b 25
c 33.3
d. 50
e 66.6</p>

<p>The graph basically has her age on the x axis and height for y axis (6,45) (8,50) (10,55) (12,60)</p>

2

<p>1) the answers is A. Find a pattern. 3 5 -5 -3 3 5 -5 -3 and so on repeating in groups of 4. So divide 55 by 4, and u get remainder 3. So go to the third term, which is -5.</p>

3

<p>term Number
1:3
2:5
3:-5
4:-3
5:3 (repetition)</p>

<p>The term repeats every fourth term. We need to find out 55.</p>

<p>Well, we know that 52 is -3 (52 is a multiple of 4)
Thus 53 is 3, 54 is 5, 55 is -5</p>

<p>[A]</p>

4

<p>Elina grew from 45 inches to 60 inches. We don’t care about any of the data in between.</p>

<p>60/45 *100 gives us what percent she is relative to her initial height. 133%. That means her height is 33% greater, so [C].</p>