SAT PREP:T,Young

Algebra Notes

100

if 4^a=^6/4 what's the value of A

a=3/8

200

8r)-(-3_r-7/8_r)(-6_r+8)

-3_r-7/-6_r+8

300

p(-1)= 7/5(-1)+6=7/-5+6

=7/1 or 7 

400

what is the value of f (3) f(x) =(1/4)/ f(3)=(1/4)

=1/4 1/4 1/4 

=64

500

4x+3(-1)(5x)+(-1)(-7) = 4x+3-5x+7 

                                   =4x-5x+3+7

=-x+10

SAT math

100

x²-8x+15 /a=-3 and b =-5 

(-3)(-5)=15

200

_ax+3g=>7/2y=_ax+2

=2

300

2(x+4)+2y=11+1/2(16+2x)

=33

400

3-m=2(1-4)

m=1-4

500

f(x) =(x-7²)-64

x=15,x=1

Medium Solving linear equations

100

_ay=2x+1 

1=2

200

-20x+12x=24 

24=24

300

2x-6y=3/2x-6(0)=3

x=3/2

400

8x-y=12/-8x24y=-12

23y=0

500

-6.4x=4+2.1/ky+3.2=5.8 /ky=3.2=5.8 

3.2/k =1.6

Medium problem solving

100

₁₀mg/Lx3/4

7.5 mg/L

200

140/85 85 D=90/D 85 D 

140D/400 7,650/140 

D=54.6

300

165/385=D/147 

165/355/147=D/147cut out = the cut out 

63=d

400

399/1500x635,000 =4/15x 635,000> 40,000

                                                       4x600,000/15                                                              cut the 15=

160,000

500

r=-1.15_a+108

•  50.43

Advanced math

100

2x²+16x+30=2[x+b)(x+c)

=2 (x²+8x+(15) or  (x+3) (+5)

200

2x-3y=4  4x/8y =(2²/(2³)^y

2

300

-2/5 (3^-1) =3-1/5₃(-1)(-2/5)

=3-1/5

400

7k-(2k²+4k+2) 7k-2k²-4k-2

-2k²+3k-2

500

9x²-18xy+9y² 

(+3x)-2(3x)(3y) (+3y)²

(3x-3y)²