12-sqrt(-8)
complex number notation
show your work
need asap

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Consider the function f(x)=-5x+3 what is f(-2)

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]