Which answer pairs a possible domain restriction for f(x) and its corresponding impact on f–1(x)?

What ia the sum if the first 7 terms of the geometric series

Light travels at 186,000 miles per second. light takes about 1 1? 3 seconds to travel from the earth to the moon. calculate the distance between the earth and the moon based on the speed of light.

From a group of 10 men and 8 women, 5 people are to be selected for a committee so that at least 4 men are on the committee. howmany ways can it be done?