Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = x2 − 5x x2 − 25 if x ≠ 5 1 if x = 5 a = 5 lim x→5+ f(x) and lim x→5− f(x) are finite, but are not equal. f(5) is defined and lim x→5 f(x) is finite, but they are not equal. lim x→5 f(x) does not exist. f(5) is undefined. none of the above

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?