Solving exponential growth and decay problems

a concert has been sold out for weeks, and as the date of the concert draws closer, the price of the ticket increases. the cost of a pair of tickets was $150 yesterday and is $162 today. assuming that the cost continues to increases at this rate :
a. what is the daily rate of increases ? what is the multiplier ?

b. what will be the cost one week from now, the day before the concert ?

c. what was the cost two weeks ago?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Gexpressions: practice question 3 of 5 jackson wants to study the popularity of his music video by tracking the number of views the video gets on his website. the expression below represents the total number of views that jackson's video receives n days after he begins tracking the nu views, where b is the rate at which the number of views changes. alb)" select the statement that would accurately describe the effect of tripling a, the initial number of views before jackson beginst the rate at which the number of views changes, b, will triple. the total number of views the video has after n days, a(b)", will not change. the total number of days since jackson begins tracking views, n, will be reduced by one-third. the total number of views the video has after n days, alb)", will triple. submit

Use the squared identities to simplify sin^2x cos^2x