An adult's dinner costs $7. a family of 2 adult's and 2 children pays $22 for their dinners. how many does a child's dinner cost?

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Which compound inequality could be represented by the graph?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?