Tori is comparing two cll phone plans that both have unlimited calls but different price points for text messages. Plan A is a $ 5 lat fee plus an additional 10¢ por toxt. Plan B, on tho othor hand, ls a $10 flat feo plus an additional 5e por toxt. Which sot of oquations can bo usod to find when
Plan B would start becoming cheaper? Answers above

take it another

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,