Free Practice Question

PS · Problem Solving

sub-505

Functions

Given the function $g(x) = 3x^2 + 15$ , what is the value of g(18)?

Answer Choices

Correct answer marked below

A

320

B

720

987

Correct

D

999

E

1,024

See the full step-by-step explanation

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Sign in Create free account

Track your performance and improve

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Start for free Sign in

Explanation

Preview

Official Explanation

Official

To find g(18), we first calculate

18^2

, which equals 324. Then, we multiply this by 3, resulting in…

Read the full explanation

Sign in for free to see the complete step-by-step solution to this question.

Create free account Sign in

Comments

2

Sign in to join the discussion

Sign in Create free account

J

JosephJul 20, 2024

Thank you very much!

K

KaydenJun 18, 2024

Thanks

What this question tests

What it tests

Your ability to evaluate and compose functions, including unusual defined operations.

Common trap

Applying function operations in the wrong order or ignoring domain restrictions.

Unlock full explanations

Create a free account to reveal the correct answer and see step-by-step explanations for every question.

Create free account I already have an account

Given the function g(x)=3x2+15g(x) = 3x^2 + 15g(x)=3x2+15, what is the value of g(18)?