Regular exercise can help a person lower their resting heart rate. Suppose an individual's resting heart rate, in beats per minute, is modeled by the function f(x) = -0.1x3 + 0.6x2 + 85 after x weeks of regular exercise.
How many weeks of exercise are necessary to lower the individual's resting heart rate below 70 beats per minute?

7 weeks
8 weeks
9 weeks
10 weeks

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

they disappear if your absent from to long. i found out that the hard way.

step-by-step explanation:

brainliest lol i just need one more brainliest.

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant