What scenario could be modeled by the graph below?

Step-by-step explanation:

f(x) = ax + b

a = -2/3

b = 6

f(x) = -2/3x + 6

Fx x

F(x) = -4/3x² + 6x

F(9) - F(0)

The area of the yellow part is 0.5 * 9 * 6 = 27

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500