if a dog can eat one thirds of a bag of food in 1/2 a week how many bags of food can the dog eat in one week

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

If the probability of an event happening is 65% then the probability this event does not occur?

What is the absolute value of the complex number -4- 2 v14 3.15 14 18