-|(-12) + 20 + (-5) + (-7)| = ?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Aline that intersects one of two parallel lines intersects the other also always sometimes never

Maria solved an equation as shown below. what is the solution to maria’s equation?