In this order only, and only using -+×÷, solve this problem 3 7 12 2=85

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

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3