The answer is B since he bought 4 in all it is x+y =4 . x=dvd y= blue ray discs .
so 2x + 5y =11
2x since dvds are $2
5y since blue ray discs are $5
11 since that’s the total
Answer:
95% Confidence interval: (0.73,0.79)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 1021
Percentage of Americans believe that high achieving students should be recruited to become teachers

95% Confidence interval:


Putting the values, we get:
Answer:
Delia started working at 9:50 A.M.
Step-by-step explanation:
We are given that:
Delia worked for 45 minutes on her oil painting.
She took a break at 10:35 A.M.
We have to determine at what time Delia start working on the painting.
35 minutes before 10:35 A.M. is 10 A.M.
Now, 45-35=10 minutes are left
now 10 minutes before 10 A.M. is 9:50 A.M.
Hence, Delia started working at 9:50 A.M.
931.86, if rounded to the nearest hundredth.