Algebra in Healthcare: Directly Proportional Linear (2)

A STEM expert in the field of Healthcare 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 Directly Proportional Linear.

TEKS: Math TEK 6.6.C; Math TEK 7.4.A; Math TEK 8.5.A; Math TEK 8.5.E; Math TEK Algebra I.2.C-D
CCSS: CCSS.MATH.CONTENT.6.EE.C.9; CCSS.MATH.CONTENT.7.RP.A.2; CCSS.MATH.CONTENT.7.RP.A.2.C; CCSS.MATH.CONTENT.HSA.CED.A.2; CCSS.MATH.CONTENT.HSF.BF.A.1; CCSS.MATH.CONTENT.HSF.BF.A.1.A; CCSS.MATH.CONTENT.HSF.LE.A.1.B; CCSS.MATH.CONTENT.HSF.LE.A.2; CCSS.MATH.CONTENT.HSF.LE.B.5