Answer:
7512 hours
Step-by-step explanation:
There are 8760 hours in a year.
There are 52 hours on Thursdays and Saturdays in a year.
The number of hours for Thurdays and Saturdays in a year is 1248.
8760-1248= 7512
Cubic polynomial

Binomial

By vertical method of multiplication we get,

For a you check the unit rate. Every 1 second mika moves, she goes 4.2 meters. From the graph, check 1 on the x axis and then check the y. The y is 3.5, so mika is faster because her unit rate is faster.
This is easy once you look at it you just have to move the decimal 7 places and you'll get 24,000,000
If you're asking for the model for the second problem (I didn't see any unsolved), here it is!