Calculus Skills Assessment

Rachel is standing atop a 13 ft ladder. The ladder is leaning against a vertical wall. The ladder starts sliding away from the wall at a rate of 3 ft/sec. How fast is the ladder sliding down the wall when the tip of the ladder is 5 ft high?

• 3 ft/sec

• -7.2 ft/sec

• 7.2 ft/sec

• 12 ft/sec

• 0

• 1

• Infinity

• Does not exist

• 9

• 0

• -3

• 3

• 1/2

• 1/3

• 1/4

• 1/5

• 0

• 1

• e

• Does not exist