What is the last step when finding the area of a compound shape?

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Tell whether the two rates form a proportion

Use the ratio test to determine whether ∑n=14∞n+2n! converges or diverges. (a) find the ratio of successive terms. write your answer as a fully simplified fraction. for n≥14, limn→∞∣∣∣an+1an∣∣∣=limn→∞.