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gregori [183]
3 years ago
15

You purchase a remote-controlled drone for d dollars. Your friend purchases a drone that costs $35 more than your drone. Your br

other 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.
Mathematics
1 answer:
zzz [600]3 years ago
5 0

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

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