What is the answer if this question

The measures of a triangle always add up to 180°

So our equation is
180=57+2x+x
We want to get x on the side by itself
So first we should combine like terms.

The equation is now
180=57+3x

After that we will subtract 57 from both sides of the equation.

180-57=123
57+3x then we subtract 57 and we are left with 3x

The equation would now look like 123=3x
To find the value of x we would then divide both sides by 3

3x/3= x
123/3=41

So the value of x is 41

41=x
or
x=41

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )