Since it is a geometric sequence each term will be a specific multiple of the term preceding it, called the common ratio...
126/42=378/126=1134/378=3
The sequence is a(n)=a(3)^(n-1) and we know the second term is 42 so:
42=a(3)^(2-1)
42=3a
a=14
So the first term is 14.
Answer:
A
Step-by-step explanation:

x = 1040/43 = $24.19 per day.
y = 10/43 = $0.23 per mile.
Answer:
62
Step-by-step explanation:
180-56=124
124/2= 62
62+62+56=180
The answer is 12+k because sum means addition and it says 12 and k therefore you and 12 and k together and the algebraic expression would be 12+k