Identify the rule for the following pattern: 99, 90, 81...

add 9
add 9

multiply 9
multiply 9

subtract 9
subtract 9

divide 9

Rosy waxes 2/3 of her car with 1/4 bottle of car wax.at this rate,what fraction of the bottle of car wax will rosey use to wax her entire car

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

Which equation is represented by the graph below?