84.

Solve for r vector. Which function formula is used?

________________________

r = ___________

84.

85.

To solve for x with

and the y vector given, the function formula

is:

The unknown isolated: x = ______________________

85.

86.

Solve for the x vector. Use the function formula:

86.

x = 200

87.

Solve for r vector.

Function formula: ________________

r = ________