Kevin purchased a prepaid phone card for $30.00. 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 function.
C(x) =30.00 – 0.09x
How much credit is left on the card after Kevin uses it for 20 minutes of calls?

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h