Gas sells at a rate of 4 gallons for $8.40. How much will it cost to fill
a tank holding 16 gallons?

Step-by-step explanation:

it will cost $33.60 to fill a tank holding 16 gallons.

$33.60

Step-by-step explanation:

Unit rate per gallon is $2.10 (find this by dividing the cost by the number of gallons)

Multiply this number by 16

2.10*16 = $33.60

i dont know

step-by-step explanation:

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note: the best i know.