Renee needs to burn at least 300 calories at the gym today. She can burn 25 calories per minute on the treadmill (t) and 10 calories per minute on the elliptical trainer (e). Which inequality below can be used to find the possible combinations of time she could spend on each machine and still meet her goal of burning at least 300 calories? A) 25t + 10e = 300 B) 25t − 10e = 300 C) 25t + 10e

Question

Renee needs to burn at least 300 calories at the gym today. She can burn 25 calories per minute on the treadmill (t) and 10 calories per minute on the elliptical trainer (e). Which inequality below can be used to find the possible combinations of time she could spend on each machine and still meet her goal of burning at least 300 calories? A) 25t + 10e >= 300 B) 25t − 10e >= 300 C) 25t + 10e <= 300 D) 25t − 10e <= 300

anonymous · Answer

@RadEn @Mertsj

mertsj · Answer

The first one.

anonymous · Answer

Which of the following ordered pairs is not a solution to the inequality y >= −4x − 2?

 (−1, 0)

 (0, 0)

 (4, 4)

 (1, 3)

mertsj · Answer

You can plug those in yourself.  The one that makes the sentence false is the one that is not a solution.

anonymous · Answer

So it is B?

mertsj · Answer

0>=-2     Is that true or not?

anonymous · Answer

yes? i dont know.

mertsj · Answer

Yes.  0 is greater than -2.  Is the problem that you don't know how to read the inequality symbols?

anonymous · Answer

i know how to, i just do not know how to know when something is true or not.

mertsj · Answer

Put the two numbers you are comparing on the number line.  The one that is further to the right is the bigger one.

anonymous · Answer

and it makes it the one that is true? then what?

mertsj · Answer

So if I have a sentence that says:   6<= 4, 
I know that is false because I know that 6 is greater than 4

raden · Answer

y >= −4x − 2
if we subtitute the point (-1,0) to ineq above, giving us
0 >= -4(-1) - 2
0 >= 4 - 2
0 >= 2
it is incorrect, but right as ur answer :)

mertsj · Answer

If then sentence is true, then it is no false.  The directions said to find the false one.

anonymous · Answer

Which of the following ordered pairs is a solution to the inequality y <= −2x + 8?

 (0, −4)

 (5, −1)

 (7, 0)

 (9, 1)

anonymous · Answer

@dmezzullo

anonymous · Answer

(0,-4)

anonymous · Answer

Part 1: Solve the inequality 2(x + 6)  3x − 2 and show all of your work. You can use >= to represent the greater than or equal to symbol.
Part 2: Use complete sentences to describe the graph of the solution from Part 1. Be sure to include the type of circle and which direction the shading will be.

anonymous · Answer

@Kanwar245 Please help!