At Walmart, Mr. Smith buys 4 packs of pencils for $1.99 each and 2 packs of paper for $3.75 each. If he pays with a $20.00, how much change will he receive?

Plz hurry evaluate the expression a+b where a=8 and b=19

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?

286 divided by 457.6 what is the quotient?