Solve the problem. Round your answer, if appropriate.As the zoom lens in a camera moves in and out, the size of the rectangular image changes. Assume that the current image is 7 cm × 5 cm. Find the rate at which the area of the image is changing (dA/df) if the length of the image is changing at 0.7 cm/s and the width of the image is changing at 0.1 cm/s.
A. 8.4 cm2/sec
B. 4.2 cm2/sec
C. 5.4 cm2/sec
D. 10.8 cm2/sec
Answer: B
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Choose the best answer.The maximum take off weight of a commercial airliner is about how much?
A. 61 milligrams B. 61 metric tonnes C. 61 grams D. 61 kilograms
Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 - 12x2 - 64; x - 8
A. Yes B. No
Solve the problem.A 5.8-ft fence is 15.431 ft away from a plant in the direction of the sun. It is observed that the shadow of the fence extends exactly to the bottom of the plant. (See drawing) Find ?, the angle of elevation of the sun at that time. Round the measure of the angle to the nearest tenth of a degree when necessary.
A. ? = 20.6° B. ? = 22° C. ? = 20.4° D. ? = 20.8°
Complete the table. Object Liters (L) Milliliters (mL) Cubic Centimeters (cc) Cubic Centimeters (cm3)Capacity of water tank 34 ??
A.
| Object | Liters (L) | Milliliters (mL) | Cubic Centimeters (cc) | Cubic Centimeters (cm3) |
| Capacity of water tank | 34 | 34,000 | 3400 | 3400 |
B.
| Object | Liters (L) | Milliliters (mL) | Cubic Centimeters (cc) | Cubic Centimeters (cm3) |
| Capacity of water tank | 34 | 0.034 | 0.034 | 0.034 |
C.
| Object | Liters (L) | Milliliters (mL) | Cubic Centimeters (cc) | Cubic Centimeters (cm3) |
| Capacity of water tank | 34 | 3400 | 3400 | 3400 |
D.
| Object | Liters (L) | Milliliters (mL) | Cubic Centimeters (cc) | Cubic Centimeters (cm3) |
| Capacity of water tank | 34 | 34,000 | 34,000 | 34,000 |