During exercise the recommended maximum heart rate in beats per minute is modeled by the formula m=176 - 0.8a , where m is the maximum heart rate and a is the persons age approximately, at what age would you have a recommended heart rate in beats per minute of 125?

52 years
64 years
67 years
70 years

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint

The blue lake trail is 11 1/2 miles long. grace has hiked 1 1/2 for 2 hours. how far did she from the end of the trail

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.