Given: -7x < -21. choose the solution set. a. {x | x < -3} b. {x | x > -3} c. {x | x < 3} d. {x | x > 3}

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

There were 34 coins in a bag. jim took 15 coins out of the bag. rose put 17 coins into the bag. how many coins are now in the bag?

20 sharpened pencils are placed in a box containing an unknown number of unsharpened pencils suppose 15 pencils are removed at random and five of the remove pencils are sharpened based on this is it reasonable to assume that the number of unsharpened pencil is 40 explain your reasoning