A cyclist is riding from the city to the country. She rides 20 miles each hour. At the
beginning of the 1st hour, she is 10 miles
away from the city center. At the beginning of
the 2nd hour, she is 30 miles away from the
city center. Write an explicit formula to show
her distance from the city at any given hour.
Then use the formula to find her distance at
the beginning of the 5th hour.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality