Plz me i don’t understand . i would appreciate if you me .

1a: A,D

1b: See the graph below

1c: Three solutions

2. y = 2x

Step-by-step explanation:

1a: Use elimination method to discard options

B) If x=4 then y=11, which is wrong.

C) If x= -1 then y=1, which is wrong.

The values in the table matches for y=2x+3.

1b: Substitutiong values in the respective equations, we get the following tables:  

x= -2, 0, 1 then y= 3, -1, 5

x=0, 1, 5 then y= 1/2, 0, -2

For the graph , you can see the figure shown.

1c: From the graph, it is clear that there are three solutions of these equations, namely (0,3), (0,1/2), (-1,1).

2: The graph of equation y=2x is parallel to the graph of y=2x+3 and hence, they will have no common solution.

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40