Write the following roots as pure imaginary numbers:

√ -81

5√ -180

someone help me please

The cost c, in dollars, for bananas depends on the weight w,in pounds, of the bananas. this situation is represented by the function rule c=0.5w (graph each function rule.tell whether the graph is continuous or discrete)

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount