It would take 1.25 seconds.

The equation would be

, since the original velocity is 8 and the original height is 15. Using the quadratic formula we have

Since negative time makes no sense, the time is 1.25 seconds.

**Answer:**

False, since x values cannot have more than one y value.

**Step-by-step explanation:**

False, since x values cannot have more than one y value.

I think the answer is 0.3

**Answer:**

1.86/0.2 = 9.3

**Step-by-step explanation:**

For working out percentages, you can use decimals e.g 80% = 0.8

Times the original price with 0.8

Once you've done that, times the original price by 0.2 then take that number away from your original price.

Another way could be that 80% + 20%= 100% so you know it's the same for both ways. Sorry if this is confusing, I hope it helps