In a contest, each finalist must answer 5 questions correctly. each question is worth twice as much as the question before it. the fourth question is worth $1,600. how much is the first question worth?

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

Multiply. write your answer in simplest form. 3/8 x 5/7

What’s -11-33k and factor each expression completely