Correct answers only !
jason has the following averages in his math class:
homework avg: 80
quiz avg: 84
test avg: 74
final exam: 60
if the teacher weights homework at 20%, quizzes at 30%, tests at 40%, and the final exam at 10%, what is jason's class average?
a. 74
b. 77
c. 79
d. 82

B. 77

Step-by-step explanation:

Jason has the following averages in his math class:

Homework avg: 80

Quiz avg: 84

Test avg: 74

Final Exam: 60

If the teacher weights Homework at 20%, Quizzes at 30%, Tests at 40%, and the final exam at 10%, Jason's class average is 77.

geometric series converge the common ratio r has magnitude less than one.

which is equivalent to

for the example we need

|2-x| < 1

-1 < 2-x   and 2-x < 1

x < 3 and x > 1

we can write that

answer: 1 < x < 3

1a. common ratio r=250/25=10 > 1     diverges

1b.   r=50/100=1/2 converges

when these converge they converge to

where a is the first term.

answer: 200

1c. r=-1   so it's not the case that |r| < 1.     diverges

2a. x is the common ratio so we converge when |x|< 1

2b.   r=-10x / -2 = 5x.

we converge when

|5x| < 1

|x| < 1/5

2c.   r=3-2x

-1 < 3-2x and 3-2x < 1

-4 < -2x and 2 < 2x

x < 2 and 1 < x

1 < x < 2

2d. [/tex] r=-48x^3/12 = 4x^3[/tex]

|4x^3| < 1

|x^3| < \frac 1 4

|x| < 4^{-1/3}