SAT Question 1d18794b: Linear Functions answer and explanation with Desmos solution

Choice C is correct. It's given that this service contract requires a monthly cost of $$23$. A monthly cost of $$23$ for $t$ months results in a cost of $$23t$. It's also given that this service contract requires a onetime activation cost of $$35$. Adding the onetime activation cost to the monthly cost of the service contract for $t$ months yields the total cost $c$, in dollars, of this service contract for $t$ months. Therefore, this situation can be represented by the equation $c=23t+35$.