Why does;
(-10)^2 = 100 but,
-10^2 = -100 ?

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made