a) In the pic.
b) He must fill 144 baskets. I did 360÷2.5 because 360 is the amount he wants to earn, and 2.5 is the amount he gets for each basket. By dividing, I find the number of baskets he must pick.
c) The expression would be: x÷2.5 I did this because whatever amount of money he wants to earn, he needs to divide it to find the amount of baskets he needs to pick.
The Z-value for a 90 percent confidence is 1.645
To find the sample size use the formula:
Sample size = Z-value x SD / error)^2
Using the provided information:
SD = 4,000 miles
Error = 500 miles
Sample size = ((1.645) (4000)/ 500)^2 = 173.18 = 174
Part a) Distance from Wrexham to Oswetry: 15 miles.
Part b) Ruthin to Oswestry: 33 miles.
Total distance travelled for Part b= 33(5), or 165 miles.
price after the discount
110 × (35/100) = 38.5
110 - 38.5 = 61.5
price after tax
61.5 × 1.07 = 76.505