Geometry, NEED ASAP, WILL MARK BRAINLIEST (DONT PUSH SIDE COMMENTS OR QUESTIONS IN THE ANSWER)

Task: Write the proof of the following, the screenshot was all I was given from the website, I filled in some parts to make your life easier, please help.
Curriculum: Writing proofs involving the isosceles triangle.
Note: there is no proofs like def of isosceles

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Solve the system of equations. y= 2x y= x^2 - 15

Is appreciated! graph the functions and approximate an x-value in which the exponential function surpasses the polynomial function. f(x) = 4^xg(x) = 4x^2options: x = -1x = 0x = 1x = 2