Question

What is the value of the expression when a = 3 and b = 2?
3a^3+2b^3
A.
78

B.
97

C.
135

D.
745

Answer 1

\[3a^3+2b^3\] Thats what it looks like.

Answer 2

substitute a for 3 and b for 2
a=3 b=2

Answer 3

I dont understand...I've never been very good in math.. ._.

Answer 4

well given : a = 3
and b =2
so we can replace a for 3 and b for 2

Answer 5

\[\huge\rm 3\color{ReD}{a}^3+2b^3\] .
given is a =3 so i'm going to replace a for 3
\[\huge\rm 3\color{ReD}{(3)}^3+2b^3\] .
same with b

Answer 6

97..

Answer 7

exponents tells us how many times we should multiply the base
so for example 4^3 would be 4*4*4