Y = -3x + 5 y = -8x + 25 using the elimination method

x= 4

y=-7

Step-by-step explanation:

y=-3x+5

y=-8x+25

re arrange both equations into

3x+y=5

8x+y=25

multiply one equation  by -1 to make eliminating possible

we will multiply the second

3x+y=5

-8x-y =25

cross out the y leaving

-5x=-20

divide

x=4

now we substitute x in one of the equations

lets use the first

3(4) +y=5

12+y=5

now minus 12 on both sides

y=-7

(4,-7)

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d