please answer during normal breathing about 11% of the air in the lungs is replaced with each breath. write an exponential decay model for the amount of original air left in the lungs if the initial amount of air in the lungs is 550 milliliters. how much of the original air is present after 30 breaths?

a = ^x

the amount of air left after 30 breaths is milliliters

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)