C
1.1, 1.2, 1.3, 1.4,
d 1,4, 9, 16, 25 no
(2, if n=1
lan--7, if n> 1
2. what are the first four terms of the
sequence defined by
r=32 ifnal
ana-7 ifnal
€9.1=2 (n-1)-7
3. find az4 for the arithmetic sequence
az4=11 +34-1)
11,16,21, "
alnita thorolated corios for each finite sequence then evaluate the series

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?