Answer:
$1820
Step-by-step explanation:
35 x 52 = $1820
Sum means we are adding. 1 + y has to be greater than or equal to 5, therefore,
Answer:
Sarah is correct
Step-by-step explanation:
Required
Which of the students is correct
Let a number be x,
Given what the teacher asked the students to do, the solution is:



Only Sarah got this correctly; others are incorrect.
The proof is as follows.
For Sarah



So, the numbers will be: 1416, -1416 and 1416
<em>Other students are incorrect</em>
Answer:
(ii) 
(iii) 
Step-by-step explanation:
Please see the attached picture for full solution.