SAT Question 445dd032: Ratios Rates Proportional Relationships And Units answer and explanation with Desmos solution

Choice B is incorrect. This expression represents adding $3$ dollars to the $$13.50z$ dollars Tanya will earn.

Choice C is incorrect. This expression can be rewritten as $16.50z$, which implies that Tanya earns $$16.50$ per hour, not $$13.50$.

Choice D is incorrect. This expression adds $3$ to the number of hours Tanya works, rather than multiplying the hours she works by $3$.