Answer:
THE THIRD ONE
Step-by-step explanation:
the equation: An=A1+d(n-1)
plug in the numbers
D is the answer
$3,500 at 10% and $6,500 at 7%.
M * 10% + (10000 - M) * 7% = 805
0.1M + 700 - 0.07M = 805
0.03M = 105
M = 3500
1/4
I hope this helps!
Please mark brainliest.
R = 8.3144598 J. mol-1. K-1.