Mrs. Petrova wrote the expression below on the whiteboard in her classroom. She asked the students in her class to write an equivalent expression using no more than one set of parentheses.

4(3x - 2z)

• Taylor wrote 12x + 8z

• Jamie wrote 2(3x + 4z)

• Chris wrote 5x + 7x - 8z

Which of the three students wrote an expression that was equivalent to Mrs. Petrova's expression?

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!