How much radioactive kind of europium will be left after 39 years if the half life is 13 years and you start with 1216 grams

You are making a blueprint of your bedroom and you plan to use a scale factor of 18 . the actual width of your room is 14 feet and the actual length of your room is 16 feet. determine the width and length of your room on the blueprint. on the blueprint, your room will have a width of feet and a length of feet.

Plz hurry evaluate the expression a+b where a=8 and b=19

What is the t intercept of the line given by the equation below y= -10x + 14