How many ways can a president and vice-president be selected in a class of eighteen students?

306

Step-by-step explanation:

There are 18 ways to pick the president

Now there are only 17 students left

there are 17 ways to pick the vice president

18 * 17 =306

There are 306 different ways to pick a president and vice president

i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!

answer: 457.14

step-by-step explanation:

205 - 45 = 160

160 / .35 = 457.142857