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Evaluate each expression.

0 votes
Evaluate each expression.   

A.)  y^4  for y = 2

B.)  x^3 + 5  for x = 3

C.)  (2a)^4  for a = 5

D.)  3a^2  for a =2
asked May 24, 2014 in ALGEBRA 1 by marleney Novice

1 Answer

0 votes

A) The expression is y4

Substitute y = 2 in above expression.

= 24

= 2 * 2 * 2 * 2

= 16

B) The expression is x3 + 5

Substitute x = 3 in above expression.

= 33 + 5

= 3 * 3 * 3 + 5

= 27 + 5

= 32

C) The expression is (2a)4

Substitute a = 5 in above expression.

= (2*5)4

= 104

= 10 *10 *10 *10

= 10000

D) The expression is 3a2

Substitute a = 2 in above expression.

= 3(2)2

= 3 * 4

= 12

answered May 24, 2014 by david Expert

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