Carmen purchased a prepaid phone card for $30. Long distance calls cost 7 cents a minute using this card. Carmen used her card only once to make a long distance call. If the remaining credit on her card is $28.67, how many minutes did her call last?

Plz i want answer and i would appreciate it is is a b c or d

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.