Identifying the Parts of an Angle

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Use sigma notation to represent the following series for 9 terms.

Hundred and tens tables to make 430 in five different ways