1) choosing 3 of 5 toppings for pizza (you can have extra of something you like)

2) choosing 3 of 5 toppings for pizza ( you cannot order "doubles")

how many outcomes are possible? ?
this is compound probability.
do not understand at

30 is 6 multiplied by a number y as a equation

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers