Y = 2x - 28 is your answer to the question
If itt says 4×3+6 it is 18 and it means you can either multiply first
(k+4) (k-4) the numbers have to multiply up to what ever the number is. so the number is 16 and 4 times 4 is 16. also a pluss and minus makes it into a negative number like the equation
2/533 =266.5 hope this helps
20 + 5 + 2 + 3 + 1 minus 1 =30