Answer:
1.68 gallons of gas
Step-by-step explanation:
0.4*4.2=1.68
1.68 gallons of gasoline
1.05+2.24= x-3.12
add the left side
3.29 = x -3.12
add 3.12 to each side
3.29 +3.12 = x
6.41 =x
a:) Integer Sequences
b:) 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, ...
8+8=16/12
x=16/12, 4/3