(100 points) A store is offering a 20% discount on all items. Is there a proportional relationship between the original price of an item and its price after the discount? Yes or no.

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Pls the last one and it has to be like number 6

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g