Trina spent $30 for general admission at an amusement park. each ride cost $2.50. she spent a total of $67.50.
what arithmetic steps can you use to find how many rides trina rode?
a. divide 67.5 by 2.5, add 30 to the quotient.
b. add 67.5 and 30, divide the sum by 2.5.
c. subtract 30 from 67.5, divide the difference by 2.5.
d. multiply 30 by 2.5, subtract 67.5.

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

if you was gonna solve for a, a is a   < -12