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15-10-2020
Mathematics

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Trinity's science instructor entered the 7th students in a STEM competition. There was an enrollment fee of $50 and an additional fee of $12 for each packet of 10 tests. The total cost was $170. How many tests were purchased?

Which of the following equations best models the situation?
Question 1 options:

12x + 50 = 170

50x + 12 = 170

12x - 50 = 170

50x - 12 = 170

Respuesta :

xavierpolon xavierpolon

15-10-2020

12x +50 = 170
-50 -50
12x=120
/12 /12
x=10

Ten packets were purchased

Answer Link

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