F(x) = {-5/2x-5/4 if 10 is less than or equal to x and x is less than or equal to 13

How do I go about solving this? It’s a piecewise function..

Given this information, which expression must represent the value of b?

In a box lenght 1m breadth 60 cm and height 40 cm small rectangular packets of dimension 5 cm into 8 cm into 10 cm are packed. how many such small packets can be packed in the big box?

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.