Jennifer purchase a $40.00 pair of jeans on sale for $30.00. how much of a discount did jennifer receive?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

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

Which number line correctly shows 0.8 + 0.3?