Complete 2,3 for 38 points.

see below

Step-by-step explanation:

factors of 75 are 1,75,3,25,5,15

also 75 = 3*5*5

2.  The number is 75 :-

2  No, not a factor of 75

3 Yes, a factor of 75

4 No, not a factor of 75

5 Yes, a factor of 75

6 No, not a factor of 75

8 No, not a factor of 75

9 No, not a factor of 75

10 No, not a factor of 75

25 Yes, a factor of 75

3. The number is 42 :-

factors of 42 are 1,42,2,21,3,14,6,7

also 42 = 2*3*7

2 Yes, a factor of 42

3  Yes, a factor of 42

4 No, not a factor of 42

5 No, not a factor of 42

6 Yes, a factor of 42

8 No, not a factor of 42

9 No, not a factor of 42

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3