Math Help!

Kayla buys a $20 phone card. She is charged $0.15 per minute for long distanced calls. What equation gives the value (v) left on her card after she makes (t) minutes of long distance calls.

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asked by Xavier
  1. 20 - 0.15t = v

  2. thank you

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    posted by Xavier
  3. You're welcome.

  4. thank

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    posted by julet
  5. A typical american baby weighs about 8 pounds at birth and gains about 1.5 pounds per month for the forst year of life. What equation rates weight w in pounds to age a in months?

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