Which inequality's solution is graphed here?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Hormones perform important functions within the reproductive system. during puberty, a number of changes occur in the body. which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone

I’m not good at math can i have ? ?