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A music store charges for lessons
according to the table below. If the store
charges a constant rate of dollars to time,
which of the following could fill the empty
row?
Time (min) Cost

a. 50 minutes for $40
o Yes O No
b. 60 minutes for $42
o Yes No
c. 70 minutes for $56
o Yes No
d. 90 minutes for $72
o Yes No

A music store charges for lessons according to the table below If the store charges a constant rate of dollars to time which of the following could fill the emp class=

Respuesta :

Rate of change:-

  • (30,24)
  • (40,32)

Slope:-

  • m=32-24/40-30
  • m=8/10=4/5

So

Next time is off course 50 .

Price should be calculated

  • y=50(4/5)=10(4)=40

Option A✓

Check all

Option B:-

  • 42=(4/5)(60)
  • 42=4(12)

No

Option C

  • 56=4/5(70)
  • 56=4(14)

yes

Option D

  • 72=4/5(90)
  • 72=4(18)

Yes

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