Answer:
When a number is written in scientific notation, the exponent tells you if the term is a large or a small number. A positive exponent indicates a large number and a negative exponent indicates a small number that is between 0 and 1.
multilply by negative three to find the next term. 1, -3, 9, -27, 81, -243, 729, which is the seventh term.
Okay!
This problem is a systems of equations - graphically, your answer will be where all the lines in the problem/system intersect.
You are given two rates at the beginning of the problem:
Keith's rate: 6 pages a day
Tameka's rate: 5 pages a day, 15 page headstart.
When you are given a rate, that is automatically a line! That's what makes these systems of equations really neat.
Try taking Keith and Tameka's rates individually and come up with an equation for the both of them, and then put the two on a graph.
(hint: substitute <em>x</em> for pages)
Good luck!