What is 9+[(4.2-3..3)+(6.4/0.8)]x3

use pemdas
/= divided by

What signals you that factoring by grouping is the best method to use when factoring a problem?

What is the y-intercept of the line given by the equation

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need