The 2nd term of an exponential sequence is 9 while the 4th term is 81. find the common ratio, the first and the sum of the first five terms

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.