0.315 ___ 0.615 what sign do i put

In what form is the following linear equation written y=9x+2

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex