Write a sentence for this equation 30- x = 4

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm