Identify which equations have one solution, infinitely many solutions, or no solution. 1/2y+3.2y = 20
3z +2.5 = 3.2+3z
1.1+3/4+2 = 3.1+3/4x
15/2+2z-1/4=4z+29/4-2z
2x+4=3x+1/2
4.5r= 3.2 +4.5r

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin