Answer:
14%
Step-by-step explanation:
A = P(1 +rt) . . . . . . . . . . . . . . . . . . formula for the balance for simple interest
2848.52 = 2006(1 +3r) . . . . . . . filling in the given numbers
1.42 = 1 +3r . . . . . . . . . . . . . . . . . .divide by 2006
0.42 = 3r . . . . . . . . . . subtract 1
0.14 = r = 14%
Nancy's account paid interest at 14% per year.
B. 6.2
The calculation is done by hand and verified by a TI-84 calculator.
An=A1+(n-1)d
A2=-8+(2-1)3
A2=-8+3=-5
No change in area
The area is 60 square feet for both rectangles.