Help plsss I will mark as brainlest if correct

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?

Consider the triangle. which shows the order of the angles from smallest to largest? angle a, angle b, angle c angle b, angle a, angle c angle b, angle c, angle a angle c, angle a, angle b

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.