What is an equation of the line that passes through the point (-6,-7)(−6,−7) and is perpendicular to the line 6x+5y=306x+5y=30

The circumference of a circle is 5 pi cm. what is the area of the circle?

Me because some of question i don’t understand

If your annual gross income is $62,000 and you have one monthly car payment of $335 and a monthly student loan payment of $225, what is the maximum house payment you can afford. consider a standard 28% front-end ratio and a 36% back-end ratio. also, to complete your calculation, the annual property tax will be $3,600 and the annual homeowner's premium will be $360.