What is 0.83 repeating

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=