Wendy can wash a car twice as fast as jason. when they work together, wendy and jason can wash a large van in 2 hours. how many hours would it take wendy to wash the van by herself? a. 5 b. 3 c 4 d. 2

#12 find the value of x. #13 find the value of the variable.

What is the slope of a line that is perpendicular to y = 3x + 1

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