Your truck gets 12 mikes per gallon. if you drive 240 miles and gas is $3.50 a gallon, what does the trip cost?

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.