Someone pls help me thanks

expression: 3(d+35)

simplified expression: 3d + 105

Step-by-step explanation:

The first drone costs d. This means the expression = d

The second drone costs d and an additional $35. Expression = d + 35

The third drone costs 3 times as much as the previous one. Expression = 3(d+35)

To simplify it, you just distribute. Hope this helps :)

what is the original number? you forgot to add it.