In the equation given, what is a+b?

I know you have to do it by making the numbers into the same 2 and 3 bases (ex. 6 is 2×3, 18 is 3²×2) but i cant finish it. Help​

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Which diagram shows lines that must be parallel lines cut by transversal?

Bocephus has a bag full of nickels and dimes. if there are 3 times as many dimes as nickels, and he has $\$36.05$ in his bag, how many nickels does he have?