Grid-in questions, or student-produced responses, account for about 22% of the 58-question SAT math section. As opposed to multiple-choice questions, where the correct answer is always one of the ...

He added it was a “question for Heathrow” as to why it took the action it did. “Losing a substation is a unique event — but there were two others available,” he said. “So that is a level of resilience ...