Name
pri iz
2. a phone company charges a fee of $12 per month plus an
additional charge per minute. the monthly phone cost c canh
represented by this equation: c = 12 + a. m, where a ist
additional charge per minute, and m is the number of minute
used.
which equation can be used to find the number of minutes a
customer used if we know a and c?
using the equation c = 12 + a. m, solve for m:
a. m = (c-12)
а
b. m = (c-12) - a
c.) m =c- 12a
m= 9-12