6. A bird is flying South for the winter. In the first day, it travels 20 miles. On its first part of the trip, it Mies a total of 120 miles over five days. What was the bird's average velocity over days 2 through 57
30 miles/day
15 miles/day
20 miles/day
25 miles/day

x + 107

step-by-step explanation:

let's say that the number he had before the mistake was x. then, he will have 107 dollars more than this, so the answer is x + 107.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

47 - 90 = 43

43 - 180 = x

x = 137