There are 3 math books, 4 science books, and 2 social studies books on a shelf. If a book is randomly selected, what is the probability of selecting a science book or a math book?​​​​​​​

Rectangle abcd is similar to rectangle rstu . what is the scale factor of a dilation from abcd to rstu ? enter your answer in the box.

In cents, what is the least total amount that cannot be obtained by using a combination of fewer than eight coins from a collection of pennies, nickels, dimes and quarters?

Which graph correctly shows the solution of the compound inequality 4x < 16 or 11x > 121? -2 0 2 4 6 8 10 12 14 10 -2 0 2 4 6 8 10 12 14 lll0 -2 0 2 4 6 8 10 12 14 -2 0 2 4 6 8 10 12 14