The function f(x) is the total amount spent at a store, when purchasing x items that are $5 each and the items are not taxable.

what is the practical domain for the function f(x)?

all positive integers

all real numbers

all whole numbers

all positive integers that are multiples of 5

Graph the equation by plotting point x=2

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).