Factor this expression as a difference of squares a^2+4a+4-b^2

Write the equations in logarithmic form 7^3=343

Given: tangent if m 1 = 30° and m = 20°, then m = 10 40 80

Derek purchased a new gym membership. it costs him seven dollars a month plus two dollars for every time that he visits the gym. he wants to spend less than 25 dollars a month to visit the gym. write an inequality that models the situation using the variable v for the number of visits per month. also find the maximum number of visits he can make to the gym and still keep his cost below 25 dollars a month.