Asked by Xavier

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.
Answered by Ms. Sue
20 - 0.15t = v

Answered by Xavier
thank you
Answered by Ms. Sue
You're welcome.
Answered by julet
thank
Answered by Anonymous
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?