Ateacher is buying supplies for an upcoming art project. she buys x bottles of paint for $1.29 each. she buys 8 more canvases than bottles of
paint for $1.89 each. her total pretax cost is $37.38. how many of each item is she buying?

She is buying 7 bottles and 15 canvases of paint

Step-by-step explanation:

* Lets change the story problem to equations and solve them

- The teacher buys x bottles of paint for $1.29 each

- She buys 8 more canvases than bottles of  paint for $1.89 each

- Her total pretax cost is $37.38

* Lets write an equation represented these information

∵ x is the number of the bottles of paint

∵ She buys 8 more canvases than bottles

∴ The number of canvases of paint = x + 8

∵ Her total pretax is $37.38

∵ The cost of a bottle of paint is $1.29

∵ The cost of a canvas of paint is $1.89

∴ 1.29(x) + 1.89(x + 8) = 37.38

- Simplify the equation

∴ 1.29 x + 1.89 x + 15.12 = 37.38

∴ 3.18 x + 15.12 = 37.38

- Subtract 15.12 from both sides

∴ 3.18 x = 22.26

- Divide both sides by 3.18

∴ x = 7

∵ x represents the number of bottles

∴ The number of bottles of paint is 7

∵ x + 8 represents the number of canvases

∴ The number of canvases = 7 + 8 = 15

∴ The number of canvases of paint is 15

∴ She is buying 7 bottles and 15 canvases of paint

what is the question here

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m