David invested $230 in a savings account that offers a 3% return on the investment. The value of David's investment will be at least $415 after a period of (blank) years.

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?