Question

You purchase a remote-controlled drone for d dollars. Your friend purchases a drone that costs $35 more than your drone. Your brother purchases a drone that costs three times as much as your friend's drone. Write and simplify an expression that represents the cost (in dollars) of your brother's drone.

Answer 1

Answer:

$Brother = 105 + 3d$

Step-by-step explanation:

Given

$Drone = d$

Friend = $35 more expensive than yours.

Brother = 3 * as much as your friend

Required

Write an expression for the cost of your brother's drone

I'll solve by analysing the question one sentence after the other

You:

$Drone = d$

Your friend:

Friend = $35 more expensive than yours.

This means

$Friend = 35 + You$

Substitute d for You

$Friend = 35 + d$

Your brother:

Brother = 3 * as much as your friend

This means:

$Brother = 3 * Friend$

Substitute 35 + d for Friend

$Brother = 3 * (35 + d)$

Open bracket

$Brother = 3 * 35 + 3*d$

$Brother = 105 + 3d$