Given the following formula, solve for r.

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Which statement describes surface features called maria on the moon

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.