A movie ticket costs $7 today. Inflation is expected to gorw by four precent a year for the next several years. If 'N' represents to current cost of the ticket, 't' , the time in years, and 'r', the rate of inflation, use for the formula, C=n(1+r)^t to predict the cost (c) of the ticket, if this inflation rate continues... (a) for 5 years
(b) for 30 years