Solving a system using the linear combination method
monica's school band held a car wash to raise money for solve the system to answer the questions
a trip to a parade in new york city. after washing 125
how many premium car washes were ordered?
cars, they made $775 from a combination of $5.00 quick
washes and $8.00 premium washes.
premium car washes
this system of equations models the situation.
x+y =125
how many quick car washes were ordered?
5x + 8y = 775
quick car washes

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?