Can any of you help me? its easy math <3

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?