Heart valves: Group of answer choices

provide pressure that forces blood through the body

close off blood supply to organs of the body

separate the chambers in the heart from the vessels leaving the heart

regulate gas exchange in the body

What is the solution of 5/2x - 7 = 3/4x + 14 ? a. x = -6 b. x = 6 c. x= 8 d. x = 12

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Females who lift weights are not going to develop large, bulky muscles because a. they have more muscle fibers than men b. they have thicker muscle fibers than men c. they have lower testosterone levels than men d. all of the above does not change length