Ineed proving each of the following numbers are rationals 87.125 -30 -8.3 58.25 121 4.5 3 7/10

Well, if a number is rational it can be written as a fraction and a decimal. For each of the examples above, you can rewrite each example as a fraction/decimal

For the first one, it equals 87 1/8

For the second one, it is already in fraction/decimal form

For the third one, you can rewrite this as -8 3/10

For the fourth one, you can rewrite this as 58 1/4

For the fifth one, it is already in fraction/decimal form

For the sixth one, you can rewrite this as 4 1/2

For the seventh one, you can rewrite this as 3.7

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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step-by-step explanation: