1. 738 moemo zapisati kao a+aa+aaa. Ako je 6a=9b koliko je b?2. 3. A red car and a blue car set off from the same point to travel the same journey. The red car has a start of three minutes before the blue car sets off.If the red car travels at 40km/h and the blue car travels at 60km/h, how many kilometres will have been travelled when the cars are level?4. A frog is at the bottom of a 78 meter well. Each day he leaps 4 meters up the well. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?5. I went to the candy store last weekend and I bought a total of10 packs candy. I bought M&Ms for1$per pack and Twizzlers for 0.5$per pack. I spent a total of 6$. How many packs of M&Ms did I buy?6. Alex can solve a problem in4minutes. Brian can solve the problem in1/5 of the time. How long does it take Brian to solve the problem?7. 7^x+1 +7^x-1=508. (6!*7!)/10!9. 16^0.25+25^0.50=