If you have 7x^2 + 3 if the input is 4 what is the output

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement