Please help figure out the function rule. Medal Awarded:
x,y = 1,7; 2,29; 3,133; 4,641; 5,3157. Thanks.

Question

Please help figure out the function rule. Medal Awarded:
x,y = 1,7; 2,29; 3,133; 4,641; 5,3157. Thanks.

joannablackwelder · Answer

I haven't finished it yet, but it looks like it will probably be some kind of power.

anonymous · Answer

They said it was expontential

joannablackwelder · Answer

3*1^3 +5 = 7
3*2^3 + 5 = 29

joannablackwelder · Answer

But that doesn't work for x=3

joannablackwelder · Answer

But I think it is something similar

anonymous · Answer

Here are the answers they said it was:

a^x + b^x = y

joannablackwelder · Answer

Oh, ok.

anonymous · Answer

I have no idea..... : 0+7, 1+6, 2+5, 3+4,

joannablackwelder · Answer

Using the form you gave, we need to pick numbers for a and b, that when we plug in 1 for x, we get 7 for y.

joannablackwelder · Answer

If we make a=3 and b=4, the formula works when x=1$$3^{1}+4^{1}=7$$

joannablackwelder · Answer

But that form doesn't work for x=2$$3^{2}+4^{2}=25$$

joannablackwelder · Answer

We needed it to be 29, so we need to pick difference numbers for a and b.

joannablackwelder · Answer

Does that make sense so far?