Hey there Smarty!
Your answer, would be the first option. I used a graphing calculater to recheck my work for this problem, and because of this reconfirmation, I concluded that you first answer would
option (a).Hope this helps you!
Answer:
Jack must Answer minimum 28 question correctly in order to get A in Science.
Step-by-step explanation:
Given:
Percentage required = 92%
Total Number of question = 30
We need to find the number of Question answer correctly.
Solution:
number of Question answer correctly be 'x'
So we can say that;
number of Question answer correctly divided by Total Number of question multiplied by 100 should be greater than or equal to percentage required.
framing in equation form we get;

Now Dividing both side by
we get;

Hence Jack must Answer minimum 28 question correctly in order to get A in Science.
It is given to us that the velocity of an object in meters per second varies directly with time in seconds since the object was dropped, as represented by the table (which is not given to us). The acceleration due to gravity is the constant of variation. Now, we know, from basic physics that the value of the acceleration due to gravity in the SI unit is 9.8 m/s^2. Therefore, the second option is the correct option. 
Answer:
45
Step-by-step explanation:
(1×4)+1=5
(2×5)+2=12
(3×6)+3=21
(5×8)+5=45
right?