What number replaces the δ?
3 = 3
1 + 3 = δ + 3
a.
1
b.
3
c.
4
d.
7

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

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?

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?