Questions Twenty one learners wrote an examination. The exam results are given below in a form
of percentages
28 A 47 56 86 35 75 47 43 57 61 82 47 61 51 74 61 84 33 43 B
68% is the range of the marks. Calculate the value of A i A is the lowest mark
512 53.048% is the mean percentage mark for the class. Calculate the value of B
Round your answer to the nearest whole number.
(2)
5.1.3 The examination paper was set out of 150 marks. Calculate the actual marks of
the learner who obtained the highest percentage.
(2)​

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =