Which is an example of the associative property? Question 1 options:

A. x + 5 = 5 + x

B.(x + 3) + 7 = x + (3 + 7)

C.3 • (x + 5) = 3 • x + 15

D. If x = a, and a = 7, then x = 7.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

45.36 feet per second.

step-by-step explanation:

to find the most accurate determination for the number of feet per second tyrone traveled on his way to work let us convert miles to feet and minutes to seconds.

1 mile = 5280 feet.

1 minute = 60 seconds.

now we will divide 158400 by 3492 to find the most accurate determination for the number of feet per second tyrone traveled on his way to work.

therefore, tyrone traveled on his way to work at the rate of 45.36 feet per second.

the answer for the second equation is (4,0)