John is ordering an ice cream sundae. There are 11 flavors of ice cream and 12 different toppings to choose from.

Which number sentence shows how to find the total number of combinations of 1 flavor of ice cream and 1 topping that Susan can choose?

A) 11 + 12 = 23
B) 11 × 12 = 132
C) 11 + 12 + 11 + 12 = 46
D) 11 × 12 × 11 × 12 = 17,424

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 104 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 105 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

A50% increase followed by 33 1/2% decrease

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?