Anybody know how to do this? i need !

Hi there! The first answer is correct.

You start with $5 and save $10 a week until you have at least $45. This situation is represented by the equation, because the variable 10w makes sense with this story and because we have a greater than or equal sign. This means that the left side of the inequality (the savings) must be greater than or equal to $45.

M< 5 = 80 , < 2 = 80, < 6= 100, < 3= 100, < 7= 80, < 4= 80, < 8= 100