6)
Find f o g

f(x) = x +6 g(x) = 3x2
A) 3x2 + 6
B) 3x2 + 36x + 108
C) 3x2 + x + 6
D) 3x3 + 18x2

How do i multiply two digit numbers

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?