9-4(-a+9)+3(7-2a) simplify
a
-2a-6
Pls help

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

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