Write an expression equivalent to

4 - (-7)

help

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

Which of the following parabolas opens down?

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18