If you divide a number into 3 equal groups and then divide each group in half, you end up with 13. write an equation to express the situation. then, determine what number you started with?

x  = 26

Step-by-step explanation:

Let   x  b the number

then x/3   (we divide x in three equal gups)

And then each group is divide in half

You end up in 13  s we have

x/3  +  X/3/2   =  13

x /3   +  x/6    = 13

(2x  + x  )/6     = 13

2x  +  x   = 78

3x   = 78

x  = 78/3

x  = 26

answer: 193

explanation:

200-7 = 193

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2