Suppose f is an exponential function and f ( 0 ) = 9 and f ( 1 ) = 17 . Write a function formula for f . f ( x ) = 8x+9 Incorrect 8 x + 9 syntax ok Suppose g is an exponential function and g ( 2 ) = 10 and g ( 3 ) = 16 . Write a function formula for g . g ( x ) = 6x-2 Incorrect 6 x − 2 syntax ok

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

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?

Interpret the following expression (5y^2-7)^3/(2y)^2