Lena deposits and withdraws money from a bank account. this table shows her transactions for march. week 1= deposit $300 - week 2= withdraw $50 - week 3= withdraw $75 - week 4= deposit $225. write an addition expression to describe her transactions. find the sum and explain its meaning.

A. 300 + (-50) + (-75) + 225

B. The sum is $400.00

The sum means Lena has $400.00 in her bank account.

Step-by-step explanation:

jjhjhhjjh

step-by-step explanation:

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.