4. A train travels at 100 miles per hour. An equation can be written that compares the time (t) with the distance (d). Define the domain and range.

9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10

What are “like terms”? why can we only add like terms?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c