The table shows the cost for ordering a certain number of tacos what is the values of x if the cost is proportional to the number of tacos ordered?

9514 1404 393

  9. x = $7.80

  10. 440 miles

Step-by-step explanation:

9. The relationship is proportional. Each taco costs $2.60/2 = $1.30. The cost of 6 tacos can be found by doubling the cost of 3 tacos:

  x = 6-taco cost = 2 × 3-taco cost = 2 × $3.90

  x = $7.80

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10. Apparently, we're to assume that miles driven is proportional to gallons used. Then we can drive m miles on 20 gallons of gas, where ...

  m/20 = 330/15

  m = (20/15)(330) = (4/3)(330)

  m = 440

440 miles can be driven on 20 gallons of gas.

only 10/60 isn't equivalent

hope this : )

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