Plz 30 points! bobbi spent $52 on books, which was $16 less than twice of what she spent for a backpack. write an equation to represent what models this situation. how much did bobbi spend on the backpack?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf