Question

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 person’s age. Solve the formula for A. At what age would you have a recommended maximum heart rate in beats per minute of 140? (1 point)
A) 40 years
B) 50 years
C) 25 years
D) 45 years

Answer 1

140=176-0.8A

Answer 2

-136=-0.8

Answer 3

Do you have a calculator?

Answer 4

yepp

Answer 5

Sorry, i wrote it wrong,
-136=-0.8a
Ok, divide -136 by -0.8

Answer 6

\[-136\div-0.8\]

Answer 7

ok hold on

Answer 8

Oh, sorry again

Answer 9

It is supposed to be \[-36\div-0.8\]

Answer 10

45 i think

Answer 11

Yes!!! That is your answer :), if you need help, i will 95% of the time help you (I might be offline, busy or might not know it)

Answer 12

oh ok thanks but i have more but its ok if you dont want to help

Answer 13

I want to help, I love to help!!!

Answer 14

oh ok thak