So PEMDAS is order of operations basicly.
P=Parenthesis
E=Exponets
M=Multiplication
D=Division
A=Addition
S=Subtraction
For example: 2x4+(9x9)-1
When solving order of operations you ALWAYS start with the problem in the parentheses.
(9x9)=81
Now multiplication comes next so, 2x4=8
Then addition, 8+81=88
Lastly subtraction, 88-1=81
Create the equation:
250-13x
Plug in 4 for the equation and solve:
250-13(4)
250-52
198
The answer is C. 198
I need help with this too haha I can't find it anywhere
Let the first number be x and second number be y.

+ (3-2y) = 129
I believe this is what your looking for.
For further help, Please ask!
And if you think I helped, Mark as the brainliest! Thankyou!