4. Suppose you earn $20 per hour working part time at a tax office. You want to eam at least $1,800 this month, before tares. How many hours must you work? show complete working

90 hours  during the whole month

Step-by-step explanation:  

Just take the amount you want to earn and divide it by the earnings per hour.  This will give you the number of hours you need to work in the month.

1800/20 = 90 hours  

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step-by-step explanation:

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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