4a) At Dave's Guitar Shop, the Gibson guitars sell for $300 and the Fender Spoints guitars sell for $400. Yesterday, Dave sold 9 guitars for a total of $3,300
Using Gand Fas variables write a system of 2 equations to model this
scenaria

yes

step-by-step explanation:

answer: y=4000x+14000

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.