CPhill

a) Call the savings before the increase, S ....and we have

S + 25% S  = 517

S + .25S  = 517

1.25S  = 517        divide by 1.25

S  = 517 / 1.25  = $413.60

b) 517 - 413.60  = $103.40   more saved after increase

....And just when I was gonna' give you 5 points.....

This happened  →  I beat you chris,

                                Nah nah na na nah !!!

I think you have

log₂5 = x

To solve this

x = log 5 / log 2  ≈  2.32

The vertex  is at x = 3

And the x coordinate of the vertex  = -b / [2a] = 3 →  b = -6a

The product of the roots =   c /a =  8 →   c = 8a

And we know that

a(1)^2 - 6a(1) + 8a   = 6

3a = 6    →

a = 2     b  = -12    c = 16

Here'a a graph : https://www.desmos.com/calculator/flafi02koq

[√6 - i √2 ]  /  [ i √3 ]       mult. top/ bottom by  i √3

[  i √18 - i^2 √6 ] / [ i^2 *3 ]  =

[3i√2 + √6 ] / [ - 3]  =

- [ 3 i√2 + √6 ] / 3

" 42 "

9 (2d)  = 18d

(-5,-9)

We can reflect twice to find the answer

First...across x ......   (-5,-9) → (-5, 9)......

And (-5, 9) across y  →  ( 5, 9 )  .....and (5, 9) is the answer.....

Note.......any successive term divided by its predecessor  =  

a_{n + 1} / a_n      =  1/2  =  r

Example.....   -82 / -164   =  1/2

I looked at this earlier and I agree wiih EP......

Each side of the base  = 8

Thus....each face can be divided into two congruent right triangles..........and each of these would have a "bottom" leg  = 4.....and in each case, the lateral edge of 4 would serve as a hypotenuse....however......a leg can never = a hypotenuse.....