Which expression is equivalent to (4x + 7y) + 5z? a) 4x + (7y + 5z) b) 4x(7y + 5z) c) 11xy + 5z d) 16xyz

(A) 4x+(7y+5z).

Step-by-step explanation:  The given expression is (4x+7y)+5z.

For the set of real numbers, we have the following associative property-

If a, b and c are any three real numbers, then  

Applying this associative property of real numbers, we can write

So, options (B), (C) and (D) are incorrect.

Thus, the correct option is (A).

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!