 Organizo en un cuadro las siguientes expresiones según la clasificación anterior: • 3a2b5 + 7y2 - abc6 • 6x2 + 98y3 • 3n5y3 +23n5y8z3 – π2 • 3a2b5 + 7y2 - abc6 + 6x2 + 98y3 • 9a3b4 • 17xy+5k2 • 3n - 22ª2 +26n4 • 3n5y3 +23n5y8z3 – π2 3n - 22ª2 + 26n4 • xy + 18n3 - 2x2 • 19n291 • xy + 18n3 - 2x2 - 9a3b4 - 19n291 +17xy+5k2

Ms. sutton recorded the word counts and scores of the top ten essays in a timed writing contest. the table shows her data. how does the word count of an essay relate to its score in the contest? word count tends to decrease as the score decreases. word count tends to increase as the score decreases. word count tends to remain constant as the score decreases. word count has no apparent relationship to the score of the essay.

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d.q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12 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

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10