Mrs. Moeser weights her grades. Tests are worth 60%, quizzes are worth 20%, homework is 10% and notebooks are 10%. Mike has a quiz average of 87, a homework average of 65, and a notebook average of 70. What does Mike’s test average have to be for him to receive a 90 or higher? A. 59.1
B. 98.5
C. 96.5
D. 69.1

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

40 minutes

step-by-step explanation:

add the time and multiply by 2

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for