*Determine whether the stated conclusion is valid based on the given information. If not, write invalid.
Explain your reasoning.*

Given: If the sum of the measures of two angles is 180, then the angles are supplementary. ∠1 and ∠2 are a linear
pair.
Conclusion: ∠1 and ∠2 are supplementary.

My answer was "Valid. Linear pairs are always supplementary", but my teacher said it was wrong.

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Simplify the following expression 48^1/2