Solve the problem.Along with incomes, people's charitable contributions have steadily increased over the past few years. The table below shows the average deduction for charitable contributions reported on individual income tax returns over a six year period. Find the average rate of change between year 3 and year 5. 
A. $330 per year
B. $250 per year
C. $315 per year
D. $500 per year
Answer: B
You might also like to view...
Find the center and the radius of the circle.x2 + y2 - 14x - 10y - 7 = 0
A. (-7, -5), r = 81 B. (5, 7), r = 9 C. (7, 5), r = 9 D. (-5, -7), r = 81
Determine if the series converges or diverges. If the series converges, find its sum.
A. converges; 
B. converges; 
C. converges; 
D. diverges
Match the system of equations with one of the graphs.xy = 25x + y = 10
A. 
B. 
C. 
D. 
Solve the problem.An agricultural research scientist is developing three new crop growth supplements -- A, B, and C. Each pound of each supplement contains four enzymes -- E1, E2, E3, and E4 -- in the amounts (in milligrams) shown in the table.
The cost of E1 is $20/mg, the cost of E2 is $40/mg, the cost of E3 is $10/mg, and the cost of E4 is also $10/mg. The growth benefit for crops is expected to be proportional to 10 times the amount of A used, 25 times the amount of B used, and 60 times the amount of C used. However, the total cost of the enzymes used in A, B, and C must be less than $5000 for each treatment. How many pounds each of A, B, and C should be produced to maximize
the growth effect? A.
| 0, 9.3, 10.0 |
B. 0, 0, 15
C. 9.0, 0, 9.5
D. 3.0, 3.0, 4.0