The point in the interior of a circle that is equidistant from all of its points is called its .

A
radius

B
middle

C
center

D
diameter

Step-by-step explanation:

This is the center of a circle.  The legit definition is the locus of all points that are equidistance from a single point.  The single point turns out to be the center and if all points in space are all the same distance from a center, the only shape you could possibly have is a circle.

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