The object distance for a concave lens is 2.0 cm, and the image distance is 8.0 cm. the height of the object is 1.0 cm. what is the height of the image?

1.0 cm
4.0 cm
0.25 cm
16 cm

Ineed with number 17 i don’t get it at alll

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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.