Which of the following are square roots of the number below?
check all that apply.

225

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet