Final answer:
To solve for y, we need to set the angles m∠ECG and m∠ECH equal to each other and solve for y using algebraic equations. The correct value for y is 25.5 or 25.05, which is not included in the answer choices provided.
Step-by-step explanation:
To solve for y, we need to set the angles m∠ECG and m∠ECH equal to each other and solve for y. So we have the equation 4y + 5 = 107. Subtracting 5 from both sides gives us 4y = 102, and dividing by 4 gives us y = 25.5 or y = 25.05. Since none of the options given in the answer choices match exactly, none of them are correct.