(02.06 MC)
Lucy's goal for her cycling class at the gym is to burn 450 calories in one hour. The number of calories (c) she actually burns in one hour varies no more than 45 calories. Which inequality below represents this scenario?

Question

(02.06 MC)
Lucy's goal for her cycling class at the gym is to burn 450 calories in one hour. The number of calories (c) she actually burns in one hour varies no more than 45 calories. Which inequality below represents this scenario?

tortillabluechip · Answer

@Suenahelpz

suenahelpz · Answer

What inequalities are present?

tortillabluechip · Answer

|c + 450| greater than or equal to 45
	|c − 45| less than or equal to 450
	|c − 450| less than or equal to 45
	|c − 45| greater than or equal to 450
Haha sorry about not listing this before. I had a brain fart.

mathmale · Answer

Hint:  This person aims to burn 450 calories per workout, but sometimes may burn as many as 45 MORE than 450 or as few as 45 LESS than 450.   Does this help you to choose the correct answer?  Think of 450 calories as the center of an interval.

tortillabluechip · Answer

so.. the first one? |c + 450| greater than or equal to 45?

tortillabluechip · Answer

@mathmale

mathmale · Answer

Generally, when you're discussing an absolute value function, representing how far a certain quantity may vary from center, you SUBTRACT, not ADD.  Try again.  Eliminate the first possible answer.  Which of the remaining answers makes the most sense?

tortillabluechip · Answer

Ok. Now I'm just thinking D.

mathmale · Answer

Please explain your reasoning.  Why are you "thinking D?"