Please help me with explanation and no links!

(q°r)(2)=7

(r°q)(2)=3

Step-by-step explanation:

(q °r)(2)= q(r(2))= q()=q()=q(2)=2^2+3= 7

(r°q)(2)=r(q(2))=r(2^2+3)=r(7)===3

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!

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y