Are the following equations an identity 6y + 9 - y = 7y - 2(y - 1)

7m - 2 = 8m + 4 - m

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?

Proving the congruent supplements theorem

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?