A manufacturer of doors, windows, and cabinets writes her yearly profit (in thousands of dollars) for each category in a vector as: 
Her fixed costs of production can be described by the vector: 
Use the matrix operations on a graphing calculator to find her income if increasing it by 20% would cause an increase in profit of 50%. (Round to the nearest thousand dollars.)
What will be an ideal response?
1.2
- 
= 1.5 
; x1 = 343, x2 = 424, x3 = 715
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The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = -1
A. Differentiable B. Continuous but not differentiable C. Neither continuous nor differentiable
Subtract the polynomials. Express your answer in standard form.17x3 - 19x2 
A. 20x3 - 33x2 B. 14x3 - 33x2 C. 20x3 - 5x2 D. 14x3 - 5x2
Solve.Last year, Maria earned $354 per week. This year, her salary increased to 
per week. What is the percent of increase? Round to the nearest tenth of a percent.
A.
| 92.4% |
B. 8.2%
C.
| 91.8% |
D.
| 7.6% |
Find the unknown complementary or supplementary angle.
A. 53° B. 73° C. 58° D. 63°