8. Karen makes $5 per hour babysitting and $12 per hour giving music lessons. One weekend, she worked
a total of 18 hours and made $139. How many hours did she spend babysitting?

Jamie went to home depot. she bought 25 bags of soil that cost $9 per bag. she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each. she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jame pay at the end?

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Luis has a cooler filled with cans of soda. for every 5 cans of coke there are 3 cans of sprite. if there are 25 cans of coke, how mant cans of sprite are there?