Charlie is 20 years old and wishes to start saving and investing. Beginning with $0 balance, she saves $50 a month for 40 years at 8% interest. Which of the following amounts is closest to the amount Charlie will contribute over 40 years? a.24,000
b.42,000
c.30,000
d.36,000

a

Step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950