How many times does the digit 7 appear among the terms of the sequence of consecutive integer numbers 7, 8, 9, 777?

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

Ineed in figuring out this problem.