Answer:
36 questions were correct.
Step-by-step explanation:
In order to find how many questions correct, you have to multiply it :

The graph represents f(x)=-2x-1
Answer:
The slope of the line is
⇒ B
Step-by-step explanation:
Let us revise the rule of the slope
The rule of the slope of the line is m =
, where
- (x1, y1) and (x2, y2) are two points lie on the line
∵ The line passes through the point (-3, 1) and point (4, -2)
→ That means one of them is (x1, y1) and the other is (x2, y2)
∴ x1 = -3 and y1 = 1
∴ x2 = 4 and y2 = -2
→ Substitute them in the rule of the slope above to find it
∵ m =
= 
∴ m = 
∴ The slope of the line is 
Answer:
Step-by-step explanation:
Given that When n is divided by 21, the remainder is an odd number.
i.e.
where m is an integer and k a positive integer <21
When n is divided by 28, the remainder is 3
, where c is a positive integer
This can be written as

Since n is giving odd remainder when divided by 21,
we get r =3 as n is a multiple of 7 +3