Real World Example functions
smart phone sales since 1990: Linear, Exponential or Quadratic
Throwing a baseball in the air: Linear, Exponential or Quadratic
Population of a colony of feral cats: Linear, Exponential or Quadratic
Grade on a test compared to hours of studying: Linear, Exponential or Quadratic
half life of a pesticide: Linear, Exponential or Quadratic
Driving at a constant rate of speed: Linear, Exponential or Quadratic

Smart phone sales since 1990: exponential

Throwing a baseball in the air: quadratic

Population of a colony of feral cats: exponential

Grade on a test compared to hours of studying: linear

Half of a pesticide: exponential

Driving at a constant rate of speed: linear

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)