First use distributive property on both sides of the equation.
-9(-16 - f) = 4(1 - 3f)
144 + 9f = 4 - 12f
Then isolate f on one side of the equation:
3f = -140
f = 46.67 --> (which is equal to -140/3)
I'm sorry I couldn't help more. I don't know why it's wrong. Maybe try putting in it decial form instead.
Answer: a. ( 1, 6 )
Step-by-step explanation:
If you go into desmos and plot your function you can go to each of the points in your answers and see just where the point is touching the line
$0.90 for the tacos. 3 enchiladas multiples by $2.00 is $6.00. then $1.80 is left so then you divide $1.80 divided by 2 and you get 0.9 and add the $ and then the 0 at the end
The answer should be C because if you use the rule , y2-y1/x2-x1 , you can find the slope which is equal to 5 so y=5x
I hope that helps you and really sorry if my answer was wrong but I tried my best!