Aradio tower is centered at (6,-16) on a coordinate grid where each unit represents 1 mile the radio signals range is 80 miles write a standard equation that describes the position and range of the tower

Step-by-step explanation:

we know that

The equation of a circle in standard form is equal to

In this problem we have

The center of the radio tower (position) is the point

The radius of the radio tower (range) is

substitute

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