Sophia babysits for $15 per hour. She mows lawns for 512 per hour me weekend, Sophia babysits 4 more hours than shemous laws
she earns a total of $195. Write a system of equations that can beu
to find how many hours she worked at each job.
he hours babysitting. Let me hours mowing.
bm4
hours worked
1512195 total money earned
(Can someone help me with both questions?)

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