The work of a student trying to solve the equation 3(4x − 2) = 9 + 2x + 5 is shown below: Step 1: 3(4x − 2) = 9 + 2x + 5 Step 2: 12x − 2 = 14 + 2x Step 3: 12x − 2x = 14 + 2 Step 4: 10x = 16 Step 5: x = 1.6 In which step did the student first make an error and what is the correct step? (4 points) Step 2: 12x − 2 = 4 + 2x Step 2: 12x − 6 = 14 + 2x Step 3: 12x + 2x = 14 + 2 Step 3: 12x − 2x = 14 − 2

d) -1

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

your answer would be 12