If Andrew spends 90 cents per litre and he goes 100km within 8.8 litres how far will $20 get him

Which of the following expressions is equal to 2x^2+8

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?