Josh goes to the store to buy groceries. he sees there is a sale for 4 apples for $1.80. what is the unit price or the cost of one apple? show your work!

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart