On a certain hot summer's day, 643 people used the public swimming pool. the daily prices are $1.50 for children and $2.00 for adults. the receipts for admission totaled
$1161.50. how many children and how many adults swam at the public pool that day?

I'll give brainliest if you answer right : )

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18