Answer:
exponential decay
Step-by-step explanation:
From the diagram we have
Base =

Height =

Area = Base × Height
126 =

⇒ Expand the double bracket
126 =

⇒ Subtract 126 both sides
0 =

⇒ Factorise the quadratic expression
0 =

⇒ Equating each factor to zero


We need the positive value of

so we use

Height = 5+1 = 6
Base = 4(5)+1 = 21
Answer:
x = 2.8 units
Step-by-step explanation:
volume = width x length x height
23.52 = 1.5 x 5.6 x height
height = 23.52/(1.5 x 5.6) = 23.52/8.4 = 2.8 units
total = 669*(1+0.026/2)^2*12
total = 669* (1.013)^24
total = 669 * 1.363410671
total = $912.12