Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parentheses 6 minus 6 i close parenthe . (6 points) 1. quantity of negative 3 minus 6 i over 5 2. quantity of 39 minus 6 i over negative 9 3. quantity of negative 39 minus 6 i over 17 4. quantity of 3 minus 6 i over 3

Alake near the arctic circle is covered by a sheet of ice during the cold winter months. when spring arrives, the ice starts to melt. s(t) models the ice sheet's thickness (in meters) as a function of time tt (in weeks). s(t)=-0.25t+4

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?