If the derivative of f(6)=0, which of the following must be true? Your
a. f(6.5)-f(5.5)=0
b. f(x) is continuous at x=0
c. f(x) is continuous ay x=6
d. f(7)-f(5)=0

Triangle xyz has vertices x(1,3), y(0,0)

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1