Carli and angela share a cell phone plan and split the bill each month last month their bill was 109 carli went over her limit on her phone so her share the bill was 15 more than angela's account overrage charge which system of equations represents this situation a c+a=15 c=a+109b c+a=109 c=a+15 c c-a=15 c=a+109d c+a=109 a=c+15

answer: group b.

step-by-step explanation:

(a) common ratio in the given sequence is, 3

(b) push ups will do kendall do on the 20th week

step-by-step explanation:

geometric sequence is a sequence of numbers that follows a pattern were the next term is found by multiplying by a constant called the common ratio(r)

(a)

given the sequence: 6 , 18 , 54 , 162 ,

this sequence is geometric sequence where each term is 3 times the previous term.

therefore,

common ratio(r) = 3.

(b)

a formula for nth term of geometric sequence is given by;

,   where r is the common ratio between the successive terms and is the first term,

to find how many push ups will kendall do on the 20th week.

here. n = 20th term.

in the given sequence first term

then;

simplify:

therefore, push ups will do kendall do on the 20th week