Answer:
$30
Step-by-step explanation:
To find out how much Billy will pay, just multiply 12 and 2.50
12 x 2.50 = $30
2.0 because if you divide 1.2 by 0.6 it equals 2.0
Answer:
x = -1 or 2
Step-by-step explanation:
Taking the antilog, you have the quadratic ...
x^2 -x -1 = 1
x^2 -x -2 = 0 . . . . subtract 1
(x -2)(x +1) = 0 . . . factor
The values of x that make these factors zero are the solutions to the equation.
x = 2 or x = -1