Please. this is the third time i've asked. i need help!! Evaluate the expression.

{[(30−60)÷(−30)]2−15}÷(−7)

What is the value of the expression?

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Aparking lot is to be 400 feet wide and 370 feet deep. how many standard-sized cars fit in this lot considering a double-loaded (w4) two way traffic set up, an angle of 90° and a sw of 9’ 0’’? (do not consider handicapped parking spaces, and consider 15’ for turning aisles). show your work.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

If sin(x) = 0 and cos(x) = 1, what is tan(x)?