Question

Help with my lab please! screenshot is attached.

Answer 1

P=4 because when x=0 y=4 and y=Pa^x , so a^0=1 and y=P, and P=4 as I said

Answer 2

I understand that where x=0 y=4 but when solving for P how did you get 4 by subbing it back into that equation? Sorry I'm not understanding

Answer 3

@Loser66

Answer 4

brb

Answer 5

okay

Answer 6

just see the graph and if you take x=0 then y=4
so 4 = P * a^0
everything in the power of 0 is 1
so 4=P*1
4=P

Answer 7

got it? still need help? I think @arbershabani97 gave you the perfect explanation.

Answer 8

Kind of if I use (-2,2) for the second part I'm confused on putting that into the equation. 2=P*a^-2? way off?

Answer 9

hey (-2,2) is not on the graph

Answer 10

you should use what is more convenient there, so you won't have many problems

Answer 11

I saw (2,7) is ok. try it. forget (-2,2) !!! it's not qualify !! you cannot use the money which is not from your pocket hehehe

Answer 12

My bad that was a major fail! 7=P*a^2? Or no?

Answer 13

plug P = 4 into it also

Answer 14

you should just try what is easier and what works for you, maybe if you try other values it won't work, I'm not very sure, but be happy with what you have :P

Answer 15

a=1.3329?

Answer 16

Does (-1,3) work? a=4/3

Answer 17

i got 1.3228

Answer 18

@Loser66 is right i got 1.3228 also, because 7=4*a^2
\[a=\sqrt{7/4}\]

Answer 19

Thank you both for your help!

Answer 20

you're welcome