If a Cell Phone Company Z charges a flat fee of $15 plus $0.50 per minute, the equation would be y=0.50x + 15, where y represents total amount of money and x represents minutes, how much would it cost for 20 minutes?

Step-by-step explanation:

f a Cell Phone Company Z charges a flat fee of $15 plus $0.50 per minute,

the equation would be y = 0.50x + 15 ..(1)

where y represents total amount of money and x represents minutes

The cell phone charge for 20 minutes = ?

substitute x = 20 in eq(1)

y = 0.50(20) + 15

y = 10 + 15

y = $25

It costs $20 dollars for 20 minutes.

nope

step-by-step explanation:

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