Solve the problem as directed. the volume (v) of a sphere varies directly as the cube of its diameter (d). write this statement in algebraic language, using an equation with the variables c, v, and d.

Since we know that our given are:

Volume which is denoted by v; and

Diameter which is denoted by d.

 Since we are looking for an equation:

The question clearly states that "v varies directly as the cube of d" means that for some constant c, 
v = c d^3 [where ^ specifies the 3 is an exponent] 
so 
c = v / (d^3)

0.02040816326

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