Carbon-16 decays exponentially according to the model A - Age 00S (t is years)
a. If there is an initial amount of 400 grams, how much will remain in 80 years.

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

How do i do this activity, is appreciated

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?