Robby had 4 4 over 9 bags of pet food. All of the bags held the same amount of food when they were full. Of Robby's 4 4 over 9 bags of pet food, 2 over 5 were dog food. How many bags of dog food did Robby have?

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

I’m confused on how to work the pie charts

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.