Algebra in Environmental Engineering: Exponential Decay with e as Base 2

A STEM expert in the field of Environmental Engineering presents a real-world situation in which they would encounter and use algebra in their career. The particular type of equation they discuss here is Exponential Decay with e as the Base.

TEKS: Math TEK Algebra I.9.B-C; Math TEK Algebra II.5.B
CCSS: CCSS.MATH.CONTENT.HSA.CED.A.2; CCSS.MATH.CONTENT.HSF.BF.A.1.A; CCSS.MATH.CONTENT.HSF.BF.A.1; CCSS.MATH.CONTENT.HSF.IF.C.8.B; CCSS.MATH.CONTENT.HSF.LE.A.1.C; CCSS.MATH.CONTENT.HSF.LE.A.2; CCSS.MATH.CONTENT.HSF.LE.B.5