Are the two expressions equivalent when x=4?
4(2+3x) 8+12x

Yes

Step-by-step explanation:

To solve, evaluate each equation when x = 4.

Rewrite: 4[2 + 3(4)]

Multiply: 4(2 + 12)

Add: 4(14)

Multiply: 56

Final 56

Then,

Rewrite: 8 + 12(4)

Multiply: 8 + 48

Add: 56

Final 56

Yes, both equations are equivalent.

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

the answer is the third / last answer

step-by-step explanation: