A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure antifreeze. In order to obtain 130 gallons of a mixture that contains 70% pure antifreeze, how many gallons of each brand of antifreeze must be used

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.