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1 vote
Evaluate this expression if a = 2, b = -1 and c = 1.

2a + 4b - 5c

=

A. 1

B. 13

C. 5

D. -5

Please help me..

User Mankowitz
by
7.7k points

2 Answers

2 votes

Answer:

The answer is D. -5.

Explanation:

Substitute the variables: 2(2) + 4(-1) - 5(1)

Multiply 2 by 2, and you get 4. Add 4 by the product of 4 and -1, which is -4, and you get 0. Subtract 0 by the product of 5 and 1, which is 5, and you get -5.


I hope this helped! :-)

User Introiboad
by
8.6k points
5 votes
Substitute the values into the equation

2(2)+4(-1)-5(1)
4-4-5
-5
User Kevin Van Mierlo
by
8.4k points

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