6th grade math please help thx!!

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

∆red ≅ ∆ by rule will give brainiest if possible

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.