Doris invested some money at 7% and some money at 8%. She invested $4,000 more at 8% than she did at 7%. Her total yearly interest from the two investments was $470. How much did Doris invest at each rate?
A. $100 at 7%, $4,900 at 8%
B. $2,000 at 7%, $5,000 at 8%
C. $1,000 at 7%, $6,000 at 8%
D. $1,000 at 7%, $5,000 at 8%
E. $1,500 at 7%, $4,500 at 8%
Answer: D
You might also like to view...
Use inductive reasoning to predict the next line in the pattern. Then perform the arithmetic to determine whether your conjecture is correct.6 × 6 = 3666 × 66 = 4356666 × 666 = 443,556
A. 666 × 6666 = 44,435,556 B. 6666 × 6666 = 444,556 C. 6666 × 6666 = 445,556 D. 6666 × 6666 = 44,435,556
Evaluate the integral.
A. 
x2+ x + C
B. 
x
+ x + C
C. 
x
+ x + C
D. 
x
+ 11x + C
Solve the problem.Note that 
From this, we might conjecture that 
+ 
= Y where Y =
A. FN(N-1). B. FN2. C. F2N-1. D. 89. E. none of these
Solve the problem.A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same time, and walk at the same speed along different legs of the triangle. If the area formed by the positions of the two people and their starting point (the right angle) is changing at 
then how fast are the people moving when they are 
from the right angle? (Round your answer to two decimal places.)
A. 1.33 m/s B. 4.50 m/s C. 0.67 m/s D. 0.33 m/s