The school's lemonade is 10% lemon juice by volume, and the rest is sugar water. how many liters of lemon juice must be added to 20 liters of sugar water to make the school's lemonade?
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If a =6, what is the value of 2a(3b + 5c)?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.