Tessellations have been used by various cultures in decorating what familiar objects?
a buildings
b clothing
c manuscripts
d all of the above

D. All of the above.

Step-by-step explanation:

When we cover a surface with a pattern of flat geometric shapes such that there should have no overlaps or gaps, then the surface is called a tessellation.

Tessellations are decorative patterns and have functions such as providing durable and water-resistant pavement, floor or wall coverings.

Thus, tessellations have been used by various cultures in decorating building, clothing and manuscript.

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles