In terms of paying less in interest which is more economical for a $130,000 mortgage: a 30-year fixed-rate at 7.57.5% or a 15-year fixed-rate at 77%? how much is saved in interest? use the following formula to determine the regular payment amount.

What is the equation of the graph below? y=sec(x)-4

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?

Can someone me and explain..will award brainlest!