How do i find the capacity of an object?

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)