Question

***Please please help!! I give medals!!
Solve Four time five m plus six minus eight is less than or equal to three hundred thirty-six.

m is less than or equal to sixteen and nine tenths

m is less than or equal to sixteen

m is greater than or equal to sixteen and nine tenths

m is greater than or equal to sixteen

Answer 1

\[ 4(5m) + 6 - 8 ≤ 336\]
\[ 20m -2 ≤ 336\]

can you get it from there? Remember that adding doesn't change the direction of the sign, nor does dividing by a positive number.

Answer 2

or was the problem \[ 4(5m + 6) - 8 ≤ 336 \]?

Answer 3

Sorry I just got the notification thing that you replied, but yeah it was the second way

Answer 4

if so

\[ 4(5m) + 4(6) - 8 ≤ 336\]

then the same procedure after that :)

Answer 5

Ohh okay
So the answer would be C?

Answer 6

you should end up with an answer "m is less than or equal to." You're not doing any operations that change the direction of the sign.


m ≤ NUMBER

Answer 7

Ohh okay let me try again

Answer 8

Is it D?

Answer 9

Show me the steps you're doing. Again, your answer should be in the form "m is ***less than *** or equal to"

Answer 10

I was never able to get the way you do it or tried to show me so this is how I did it.
I filled in M with 16.9, but if you did that the answer was 354,
So then I tried it was 16 and the answer was 336 exactly
So since it was 336 exactly M must be greater than 16 in order to be greater than 336

Answer 11

Ohh nevermind I see what I did wrong
I tried to make m greater.
The answer is B

Answer 12

:D Yah! And your reasoning is sound :) Guessing and checking has saved me lots of times. Just remember that with

\[ 20m +24 - 8 ≤ 336\]
it's a lot like
\[ 20m +24 - 8 = 336\]
get the m to one side,
\[ 20m ≤ 336 - 16\]
\[m ≤ 320 / 20\]

then the alligator always eats the bigger number (the only way I ever remember inequalities)
\[ m ≤ 16 \]

the bigger number is thus 16, so m is less than or equal to 16. B, like you said

:)

Answer 13

Thanks so much ! (: