A phone company charges a base fee of $20 per month plus an additional charge per minute The monthly phone cost C can be represented by this equation: C = 20 + em, where e is the
extra minute cost, and m is the amount of minutes used. Which equation can be used to find
the number of minutes a customer used if we know e and C?

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?