See attached picture for the answers:
Answer:
The principal amont was $35,000
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:

In which E are the earnings, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
In this problem, we have that:

We want to find P. So





The principal amont was $35,000
Answer:
6 friends, $2 left
Step-by-step explanation:
He has $38 dollars, but each ticket costs $6. Divide them to see how many tickets he can buy.
38/6 = 6 remainder 2
He can pay for 6 friends, and the remainder is $2.
Answer:
10xy (option 5)
Step-by-step explanation:
it contains both x and y pronumerals