Pls, help! I really need it! THANKS!! I'm giving 15 points + BRAINLIEST THANK YOU NOW PLS HELP ME

k= 112

Step-by-step explanation:

12y = 7z

y= 7z/12

3x =8y

3x= 8× 7z/12

3×=56z/12

36x=56z

x=56z/36

zk=72x

zk= 72 ×(56z/36)

k= (72×56)/36

k=112

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

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x