Check all that is true about the function f(x)=x4 - 6x3 : f has critical numbers at x=0 and x=9/2 f is increasing for x>9/2 and has a local minimum at x= 9/2 f is concave up on the interval (0, 3) and has inflection points at x=0 and x=3. f is concave up for x<0 and for x>3; has inflection points at x=0 and x=3.

d

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~coco

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step-by-step explanation:

the correct answer is x/3+10≥32

hope this !

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.