jonesracer jonesracer
  • 01-11-2021
  • Mathematics
contestada

a
Karen purchased a prepaid phone card for $20.50. Calls cost 9 cents a minute using this card. The credit, C (in dollars), left on the card after it is used for
x minutes of calls is given by the following.
C=20.50 -0.09x
How much credit is left on the card after Karen uses it for 30 minutes of calls?

Respuesta :

richmentz51
richmentz51 richmentz51
  • 01-11-2021

Answer:

.09×30=2,70 20.50-2.70=17.80

Answer Link

Otras preguntas

Payments designed to make up for war damage are known as
What percent is 150 sq ft of 3000 sq ft
which of the following would not make a good insulator* rubber*plastic*wood*metal
does gas have as definite or indefinite volume
What happens at a conservative plate boundary? Someone please help me in this because I have test today. Aswell please don't copy it from the internet.
if y is the principal square of root 5,what must be true
if y is the principal square of root 5,what must be true
What features of the Chinese form of government did the mongols adopt?
Why did the americans go to Oregon during manifest destiny and why did the mormon go to utah??
John Marshall's Supreme Court decisions in the early 1800's did all of the following, except...a.) increase the power of the federal government over the statesb