The ratio of an object's weight on earth to its weight on neptune is 5 : 7. how much would a person who weighs 150 pounds on earth weigh on neptune? a. 107 1/7 pounds b. 750 pounds c. 170 pounds d. 210 pounds

5:7
In english, what this is saying is that for every 5 units of weight on Earth, is 7 units of weight on Neptune. 
Given this, it would make sense that your weight on Neptune, say Y, equals your weight on Earth, say X, divided by five, then multiplied by seven.
Y = (X/5) * 7
Y = (150/5) * 7 = 210

3i think i’m not quite sure skskksks but if that ig

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.