Determine the equation of a circle with a center at (–4, 0) that passes through the point (–2, 1) by following the steps below. use the distance formula to determine the radius: substitute the known values into the standard form: (x – h)² + (y – k)² = r². what is the equation of a circle with a center at (–4, 0) that passes through the point (–2, 1)?

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

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?