1. Find the distance between (-10,1), (-9,8) A. 2√70
B. 5√2
C. 4√3
D. 2√41

2. Find the midpoint of (-3,5) and (4,-9)
A. (-2, 1/12)
B. (-1/2, 2)
C. (2, -1/2)
D. (1/12, -2)

3. If R is the midpoint of QS, find QS.
x=?
QS=?

Use distance formula:

Correct choice is B

Use midpoint formula:

Correct choice is D, it should read (1/2, -2)

R is midpoint of QS:

unpaid balance is : $149.99-$50 = $99.99 new balance = 149.99+2.62-50 = $102.61 finance charge = 99.99- 0.21/12= $1.75 new balance = 99.99+1.75 = $101.74 average daily balance method average daily balance= 3399.70/30 = $113.32 finance charge = $ 0.21/12ă—113.32 = $1.98 new balance = $149.99-50+1.98 = $101.97