If z2 is directly proportional to w and z=4 when w=8 * find an equation connecting w and z,
* find the value of x when w=18,
* calculate the value of w when z=5,
* draw the graph if z2 against w. ​

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