The sum of two numbers is 400. The smaller number is 100 less than the larger number, n.
What is the value of n?
a.150
b.200
c.250
d.300

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Factor the polynomial. b^2 + 4b + 4

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?