Which letter(s) should be replaced with the repeating decimal 0.3? which letter(s) should be replaced with the repeating decimal 0.6?

answer choices for both of the questions:
x
y
z
x and z

fyi: don't say anything stupid or I will report you, and I need the answer for both questions thanks xoxo

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.