Evaluate the expression 6x + 21y when Y = 4 x=3

102

Step-by-step 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.

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 :))

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.