Which ordered pairs in the form (x, y) are solutions to the equation 7x−5y=28?

Select each correct answer.
1: (−1, −7)
2: (7, 9)
3: (4, 10)
4: (−6, −14)

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Brent wants to know what is 5 x 1/2

1: 4 if the wew 35 surfboards at the beach how many were short boards?