Cards numbered 1 through 30 are placed in a bag and shuffled. one card is chosen at random. what is the probability of randomly selecting a number less than or equal to 5, or a multiple of 7?

a.1/15

b.3/10

c.2/15

d.1/30

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.