A science class produced this graph to show the number of bacteria in a culture at various times. At this rate, how many bacteria will there be at 5 hours?

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use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

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4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: