National cell charges a $5 flat fee for a text messaging plan and $0.15 per text. world wireless doesn’t charge a flat fee , but it charges $0.19 per text. which inequality and solution represent the number t of texts for which world wireless is cheaper then national cell ?

For this case, the first thing we must do is define a variable.
 We have then:
 t: number of texts
 We now write the expression for each plan:
 National cell:
 
 World wireless:
 
 The inequality for which World wireless is cheaper than national cell is:
 
 Solving for t we have:
 
 
 
 
 
 An inequality and solution that represent the number of texts for which world wireless is cheaper then national cell is:
 
 

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.