The percent y (in decimal form) of battery power remaining x hours after you turn on a cell phone is y=−0.02x+0.60. what is the battery power when you turn on the phone? how long after you turn on the phone does the battery last?

Step-by-step explanation:

The fraction remaining at turn-on is found by setting x = 0.

  y = -0.02·0 +0.60 = 0.60 = 60%

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The number of hours the battery will last is found by setting y = 0.

  0 = -0.02x +0.60

  0 = -x + 30 . . . . . . . multiply by 50

  x = 30 . . . . . . . . . . . add x

The battery will last 30 hours after you turn on the phone.

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

answer:   x*94 +688*6   = 267*100

94x+4128=26700    

94x=22572     /94

x=240.128

step-by-step explanation: mark as brainlest reallly need it thx