Question

Answer all three for 40 points

Answer 1

1.

So remember that with more than one pair of parentheses, you have to start from the inside and make your way outside.

Firstly, on the left side, solve 5+2 and on the right side solve 4 × 3:

$4[3(7)]=95-12$

Next, on the left side, solve 3 × 7 and on the right side solve the subtraction:

$4[21]=83$

Lastly, solve the remaining multiplication on the left side and the answer is $84= 83$

Since 84 is not equal to 83, the correct answer is the second option.

2.

For this, plug 5 into the z variable to solve.

$3*5=2*5+5\\15=10+5\\15=15$

Since 15 = 15 is true, your answer is the first option.

3.

So for this, it's a similar process as Question 2 except that you are plugging in 0 into the x variable to solve:

$8-4*0=4*0\\8-0=0\\8=0$

Since 8 = 0 is a false statement, the correct answer is the second option.