How do you write 12.375 in expanded form

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.