Question

Suppose that the function f(x) = 3x + 11 represents the cost to rent x video games a month from an internet gaming club. George now has $6. How many more dollars does George need to rent 14 video games next month?

Answer 1

Set x=14

Answer 2

f(14) = 42+11

Answer 3

okay

Answer 4

f(14) = 53, so he needs $53 to rent 14 video games but he has $6 so he needs $53-$6 = ??? more.

Answer 5

47

Answer 6

Yes

Answer 7

The sequence below shows the number of flowers a plant enthusiast plants each year.

6, 30, 150, 750, ...

Which formula could be used to determine the number of flowers the nursery will plant next year, NEXT, if the number of flowers planted this year, NOW, is known?

Answer 8

This is a geometric progression problem

Answer 9

okay, I got F(n)=1n-5

Answer 10

\[a _{5} = 6(5)^{5-1}\]

Answer 11

The geometric progression formula is this
\[T _{n} = ar ^{n-1}\]

Answer 12

okay

Answer 13

you can see the sequence it multiples by 5 each time

Answer 14

would it be n+5

Answer 15

no because this is a geometric progression

Answer 16

it starts at 6 and it multiplies by 5 each step