1. how many solutions does the system of equations have? x=-4y + 4 and 2x + 8y=8
a. one
b. two
c. infinitely many
d. none

2.. how many solutions? y=5x+7 and 3y-15x=18
one
two
infinitely many
none

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