Answer:
answer is C f(n) = 4(3)n; f(5) = 972
Step-by-step explanation:
i took the test, also
To solve this problem we can set up a proportion.
![\frac{6}{78} = \frac{x}{99}](https://tex.z-dn.net/?f=%20%5Cfrac%7B6%7D%7B78%7D%20%3D%20%5Cfrac%7Bx%7D%7B99%7D%20)
Then cross multiply and divide.
99*6=594/78= 7.6.
Lisa would have had to study about 7.6 hours to get a score of 99.
You can find the area of the rectangle and the triangle separately and then add them together which would result in 330in. I personally do not think you should use the trapezoid formula even though they said it is a trapezoid (a trapezoid is usually not shaped like that) but if you want to it would result in 270in.
A: the correct answer is 24-8x
y is 5 less then the product of 4 and x
y = 4x-5
Choice C