Which table best represents the steps to solve the equation x over 2 + 1 = −5? Step Justification Step 1: x over 2 = −5 + 1 The
same number +1 can be added to both sides of the equation Step 2: x over 2 = −4 Adding 1 and −5 on the right hand side Step 3: x = −4 ⋅ 2 The same number 2 can be multiplied on both sides of the equation Step 4: x = −8 Multiplying −4 and 2 on the right hand side Step Justification Step 1: x over 2 = −1 − 5 The same number − 1 can be added to both sides of the equation Step 2: x over 2 = −6 Adding −1 and −5 on the right hand side Step 3: x = −6 − 2 The same number 2 can be subtracted on both sides of the equation Step 4: x = −8 Adding −6 and −2 Step Justification Step 1: x over 2 = −1 − 5 The same number −1 can be added to both sides of the equation Step 2: x over 2 = −6 Adding −1 and −5 on the right hand side Step 3: x = −6 ⋅ 2 The same number 2 can be multiplied on both sides of the equation Step 4: x = −12 Multiplying −6 and 2 on the right hand side Step Justification Step 1: x over 2 = −1 − 5 The same number −1 can be added to both sides of the equation Step 2: x over 2 = −6 Adding −1 and −5 on the right hand side Step 3: x = −6 ÷ 2 The same number 2 can be divided on both sides of the equation Step 4: x = −3 Dividing −6 by 2 on the right hand side
If you add the standard deviation to the average, it is 14.84. Because Marcus's score was lower than that, he will not receive a certificate. I think this should be right for the reason and the calculation.
