THIS IS AN EMERGENCY PLEASE HELP MEE A family eats at a restaurant. The bill is $42. The family leaves a tip and spends $50.00 in total. What percent of the bill did they leave as the tip?

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

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

The trigonometric ratios sine and secant are reciprocals of each other