If y varies inversely as x, and x= 8 when y = 4, find y when x = 2

y = 16

Step-by-step explanation:

Use the inverse variation equation, y =

Plug in 8 as x and 4 as y, then solve for k

y =

4 =

32 = k

So, k is 32.

The equation is y =

Plug in 2 as x and solve for y

y =

y =

y = 16

So, when x = 2, y = 16

step-by-step explanation:

so first find out how much each is worth.

quarter= 25 cents

dime= 10 cents

pennies= 1 cent

then multiply each by how much each is worth.

200                     150                   300

x                         x                     x   1

  25                       10              

                                  300

1000                     1500

+                          

4000                                      

5000                                  

then count 2 from the back and add a period.

$50.00

$15.00

$3.00

and then add them

  $50.00

+

  $15.00

+

    $3.00

$68.00

so sunghee has $68.00

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