Aradioactive substance has a half-life of 10 years.
a. find the equation that describes the quantity of the substance present at time t using the continuous exponential model.
b. determine the continuous rate of decay.

for part a, i got the equation: . is part b -6.93%? how exactly do you find continuous rate of decay?

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