select all the pairs of ratios that form a proportion pick two

1/6, 4/20
7/9, 28/36
14/18, 21/27
30, 6/18

2. which pair of ratios does not form a proportion pick one

3/5, 24/40
30/10, 15/5
9/14, 3/4
7/12, 14/24

3.two shirts cost 12.50 how much will it cost to buy five of the shirts

6.25
31.25
25.00 this one
30.00

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions