I have no doubt that the reply to question 2 would have been correct if you had bothered to format your equation correctly. I assume the equation was meant to be e^(4x + 6) - 2 = 0. If your equation is not formatted correctly it should come as no surprise that it will be misunderstood.
Be that as it may, these questions look like they're part of an assignment that counts towards your final grade. MHF policy is not to give help for such questions since it's meant to be your own work.