Hiroto’s texting plan costs $20 per month, plus $0.05 per text message that is sent or received. emilia’s plan costs $10 per month and $0.25 per text. using the graph below, which statement is true?

hiroto’s plan costs more than emilia’s plan when more than 50 texts are sent.
both plans cost the same when 22 texts are sent.
emilia’s plan costs more than hiroto’s plan when more than 22 texts are sent.
both plans cost the same when 50 texts

Hirotos plan cost more than emilias when more than 50 texts are sent.

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2