What is the correct evaluation of 15-3x, when x is equal to -2? -15

21

15

-21

This question awards 100 ! i really don’t want to fail i will also mark you !

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1