Tommy earned $76.00 in interest after 5 years on a principal of $400. jane earned $82.00 in interest after 2 years on a principal of $1,000. which bank would you rather use, tommy's or jane's? why?

The bank in which Jane has invested.

Step-by-step explanation:

For Tommy's Bank:

P = $400

t = 5 years

I = $76

Simple interest formula is given by

For Jane's Bank:

P = $1000

t = 2 years

I = $82

Simple interest formula is given by

Since, Jane's bank has higher interest rate. It means one can get higher interest if invest in this bank.

Therefore, we should prefer the bank in which Jane has invested.

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