How many times larger than (10 + 25) is 4 x (10 + 25)?

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

What is the sum of the first 8 terms of the geometric series