Which describes simple, solid instruments that produce sound by struck, scraped, or shaken? a. aerophones b. chordophones c. idiophones d. membranophones

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Twelve less than a number is at most 20

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.