I need help with 4-7 plz help me it’s due tomorrow

If square root x = -7, then x= -49 true or false

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15