What is the value of s in the equation 4(2s − 1) = 7s + 12? (4 points) A.12
B.16
C.32
D.34

B. 16

Step-by-step explanation:

Solve for s:

4(2s - 1) = 7s + 12

Expand out terms of the left hand side:

8s - 4 = 7s + 12

Subtract 7 s from both sides:

(8s - 7s) - 4 = (7s - 7s) + 12

8s - 7s = s:

s - 4 = (7s - 7s) + 12

7s - 7s = 0:

s - 4 = 12

Add 4 to both sides:

s + (4 - 4) = 4 + 12

4 - 4 = 0:

s = 12 + 4

12 + 4 = 16:

s = 16

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

the answer is c

step-by-step explanation: