14,105 views
31 votes
31 votes
Evaluate the expression 6x + 21y when Y = 4 x=3

User WiatroBosy
by
3.0k points

2 Answers

23 votes
23 votes

Answer: 102

Step-by-step explanation: 6x + 2y

6(3) + 21(4)

18 + 84

102

basically you just plug in 4 where it says y in the equation and plug in 3 where it says x in the equation and solve :))

User Rauno Palosaari
by
3.3k points
10 votes
10 votes

Answer:

102

Explanation:

You have to substitute x and y. Since x = 3 and y = 4, you would write the equation as 6(3) + 21(4). Multiply that, and you get 18 + 84. Add that together, and you get the answer 102.

User Longmang
by
2.8k points