Peggy reads 2 chapters of a book in 10 minutes. At this rate, how many chapters can she read in 30 minutes?

6

Step-by-step explanation:

to get this awnser we know that she can read 2 chapter in 10 minutes

so if we double this it would be 4 chapters in 20 minutes

then 6 chapters in 30 minutes

we can also find this by dividing 30/10 =3

then times that by the ammount of chapters 2x3=6

answer is c

step-by-step explanation:

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,