How old was the oldest McDonald brother when he finally reached his goal of $1 million dollars?

i don't exactly know how old he was but his goal was before he was 50 yrs old

Explanation:

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

the answer is a) high entry costs