помогите решить задание такое(найдите число,оканчивающиееся цифрой 7,если оно: а) больше131 и меньше 141; б)меньше457 и больше 437

Найдите область определения функции

у=корень 4-х/х + корень х/2+1 

You were going to visit your friend in London at the beginning of June. But unfortunately the schedule of the independent testing has been changed. Write a letter to your friend and:
• Apologize for breaking your plans
• State the reason of your not coming
• Express your regret about postponing your meeting
Ask if it is possible to come later in the summer

Write a letter of at least 100 words. Do not write your own name, any dates, addresses or other personal information.

как особенности строения ткани связаны с выполняемыми функциями