7th grade project due Friday January 18th, 2013

Here you all have the last 10 exercises for the project:

1. Let "n" be any prime number. Tell whether the statement "2n + 1 is prime" is sometimes, always, or never try.

Write the prime factorization of each number. Use exponents where possible:

1. 96
2. 150
3. 225
4. 333

1. A bank customer has $172 in a bank account. She withdraws $85 per month for the next 3 months. She also writes 4 checks for $45.75 each. How much money should she deposit to ensure that her balance is at least $25 at the end of the 3 months?
2. You go with five friends to an amusement park. The tickets originally cost $36.5 each, but you receive a group discount. The total cost is $198. What discount does each person receive?

Find the value of each expression:

1. 36 +(-2x3) - 5
2. (18 - 9) x 8
3. 100 - 7 x 9

Have a great afternoon!