Darion got a $75 gift card to an online music store. He uses the gift card to purchase a game for $29.99. He also wants to use the gift
card to buy some songs on Apple Music. Each song costs $1.29.
Write and inequality for this situation.

29.99 - 1.29s ≤ 75

Step-by-step explanation:

s = songs on Apple Music

≤ = less than or equal to

they are simplified

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional