Mrs. kwan is three times as old as her daughter ling, her son chan, who is 5 years old is half as old as ling. how old is mrs. kwan?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

One of the solutions to x2 - 2x – 15 = 0 is x = -3. what is the other solution? ox=-5 ox= -1 0 x=1 x = 5