The amount of a chemical compound, in grams, is modeled by the expression 90(1−0.09)h
90
(
1
−
0.09
)
h
, where h
h
is the number of hours since the initial amount of the compound was recorded. What does the 90
90
represent?
Responses
the initial number of grams of the compound
the initial number of grams of the compound
the number of grams by which the compound decreases each hour
the number of grams by which the compound decreases each hour
the number of hours it takes for the compound to decrease by a gram
the number of hours it takes for the compound to decrease by a gram
the percentage of grams by which the compound decreases each hour
