Question

Help Please


Evaluate the expression when a = 4.

http://static.k12.com/bank_packages/files/media/mathml_5dfdafb1893382e7c398d863569222d7e8e31c3a_1.gif

A.
14

B.
24

C.
128

D.
512
@johnweldon1993

Answer 1

Alright...so what you need to know about something like that is...the exponent is ONLY being applied to the 'a'... so think of this as

2 times a^3

So since the question states that a = 4...we have

2 times 4^3

and remember that 4^3 is just 4 * 4 * 4...

so what is 2 times (4*4*4) ?

Answer 2

128

Answer 3

Great job again!