Answer:
x=6
Step-by-step explanation:
13x+12=90
13x=78
x=6
Exact form 27/4
decimal form 6.75
mixed number form 6(3/4)
Rotation counterclockwise 90 degrees has the rule
(x,y) -> (-y,x)
So the image is obtained, according to the rule,
(2,3) -> (-3,2)
the correct answer would be 4 3/4
hope this helps!
lmk if you would like an explanation! :)