You fill your car with 15 gallons of gas at a cost of $45. Using fractional notation, how do you write a proportion that shows how much 5 gallons of gas will cost? Use x to represent the unknown cost. (1 point)
• 15/x = 45/5
• 15/45 = x/5
• 15/45 = 5/x
• 15:45 :: x:5
15/45 = x/5
Determine it 2,5 = 13 or 25 3 13 is a proportion. (1 point)
• Both are proportions.
• Neither is a proportion.
• 2.5/10 = 12/48
• 2.5/2 = 12/24
Neither is a proportion.
Determine if one, both, or neither of the following is a proportion. 16/8 = 24/12, 8/4 = 12/6 (1point)
• 16/8 = 24/12, 8/4 = 12,6
• Neither is a proportion.
• 8/4 = 12/6 only
• 16/8 = 24/12 only
16/8 = 24/12, 8/4 = 12/6
Determine it 2.5/10 = 12/48 or 2.5/2 = 12/24 is a proportion. (1 point)
• Both are proportions.
• Neither is a proportion.
• 2.5/10 = 12/48
• 2.5/2 = 12/24