A local elementary school is having a bake sale fundraiser. The students are selling 30 cupcakes, 10 pies, and 60 cookies. What is the ratio of the number of cupcakes to the total number of baked goods?

10:3

7:3

3:7

3:10

Which expression gives you the distance between the points (5,1)and(9,-6)

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.