Answer:
Rock's net cash flow from investing activities was -$36,100
Explanation:
The amount of cash increased during 2016:
$91,300 - $79,000 = $12,300
Cash increased during 2016 = Net cash flow from operating activities + Net cash flow from financing activities + Net cash flow from investing activities
Net cash flow from investing activities = Cash increased during 2016 - (Net cash flow from operating activities + Net cash flow from financing activities) = $12,300 - ($37,300 + $11,100) = -$36,100