Evaluate -3+i / 3 + 3i and express as a simplified complex (i thought the answer would -1/3 + 2i/ but i think it has to be a + bi or a*e^(

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

Which of the following contains a variable?