Answer: 131 hours
Step-by-step explanation:
Answer:
She needs to work 131 hours
2,489 divided by 19 = 131
482.5
Each bag is $1.50. 11 bags would cost $16.50.
a)
30.65^2/(2*5.15)=91.2061
d=91.2061
b)i)90
ii) Mathswatch is critical of anything apart from it's system so I dont know what the answer is for this one