What expression con you substitute in the indicated equation to solve the system below?

5x+y=8
x+4y=2
a. 2-4y for x in 5x +y=8
b. 8+5x for y in 5x+y=8
c.2+4y for x in x +4y=2
d. 5+8x for y in x+4y=2

What is the distance between (–2 1/2,-3) and (1, –3)?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.