eggemotions
eggemotions eggemotions
  • 09-03-2017
  • Mathematics
contestada

Savannah was paid $87 for 12 hours of babysitting and $65.25 for 9 hours. What is the constant of proportionality that describes this relationship?
A) 0.14
B) 7.25
C) 12.5
D) 65

Respuesta :

Baileyy
Baileyy Baileyy
  • 09-03-2017
The answer is B. 7.25
Answer Link
bcalle
bcalle bcalle
  • 09-03-2017
y = kx
87 = k(12)
divide by 12 on both sides
k = 7.25

y = kx
65.25 = k(9)
divide by 9 on both sides
k = 7.25

Letter B
Answer Link

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