SAT Math Question

Start with x=0, because you know any value to the power of 0 is 1. Use a=1 at x=0 to find k (k=1/2)
The sub k and solve using another value of x in the table.

D

>>8603586
>>8604086
Those anons are right, answer is (D) 4
Also k is 1/2, as you can clearly see from the x = 0(since a must be in this case 1)

>>8603574
Technically you have

ka^0 = .5
ka^1 = 2

Two equations two unknowns, you can solve for k.

But a^0 = 1 implies k = .5 so you're done.

>multiple choice questions
Why do Americans do this

>>8603574
E

>>8605427
To trick people who have answers off by [math]\displaystyle \pm 1[/math] and to make room for penalizing people for guessing on questions.

>>8603574
>>8605292
>>8604708
>>8603583

Finding k is for idiots who don't do good on the SAT's becuz 2 slow.

ka^1/ka^-1=a^2
2*8=a^2
4=a

>>8605857
>actually needing to write down crap rather than seeing this in your head instantly

>>8603574
d

>>8605861
well the math to it is so simple that you can do it in your head, thats the point. After the time it took to read the question I got the answer in about 10-15 seconds it seemed