(3xy)^2x^4y simplifying an expression

Step-by-step explanation:

The problem needs application of law of indices

This means common power for terms can be applied to each term individually.

Separate power for the terms having  same base can be added together.

_______________________________________________________

we will be using these law of indices in the problem

applied the first rule of indices as mentioned above

applied the second rule of indices as mentioned above

Thus, simplified form of (3xy)^2x^4y  is .

b.-4 units

all you   do is count how many times you move

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.