Mr. Yang purchased 5 pounds of grapefruit for $4.90. At this price, how much will 7 pounds of grapefruit cost? A
$0.98
B
$3.50
C
$6.86
D
$7.98

C. 6.68

Step-by-step explanation:

One grapefruit is 0.98 so we know so we multiply by 7 and get 6.86

hope this helped

understand that i don't know the answers

will someone answer his question

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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