Fred Flintstone bought seven boxes to put with his collection of boxes. A week later half the
boxes were ruined in the rain. There are now only 22 boxes left. With how many did he start?
What equation can I use to solve this?

He started with 37.

Step-by-step explanation:

I reasoned

There are 22 left ( a result of being halved ) which means there must have been 44 just before that.  And, he added 7 boxes to get that 44 total. So, what is 7 less than 44?

except a rational number. : )

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.