Why is it important to use exponential notation

Find the measurement of angle b in the following triangle

What is being done to the variable in the equation 3 + g = -9? the number 3 is being added to it. the number 3 is being subtracted from it. the number -9 is being added to it. the number -9 is being subtracted from it.

He factorization of 8x3 – 125 is (2x – 5)(jx2 + kx + 25). what are the values of j and k?