Is "15 degrees warmer than yesterday" a equation? need for think through math.

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

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