For this case we have the following variables:
x: number of months
f (x): number of caps sold
The function that models the problem is given by:
By the time the store sells 64 caps we have:
From here, we clear the number of months:
Answer:
the store sells 64 caps in 3 monts
A. month 3
The annuity could provide $221.19 each month
Step-by-step explanation:
The ANNUITY FORMULA is , where
1. is the balance in the account after t years
2. d is the regular deposit (the amount you deposit each year or month
or .........)
3. r is the annual interest rate in decimal
4. n is the number of compounding periods in one year
5. t the number of years
∵ Loren knows that he will have $500,000 when he retires
∴ = $500,000
∵ he sets up a payout annuity for 30 years in an account paying 10%
interest
∴ t = 30 years
∴ r = (10/100) = 0.1
∵ The annuity could provide each month
∴ n = 12
Substitute the values above in the formula
∴
∴
∴ 500,000 = d [2260.487925]
- Divide both sides by 2260.487925
∴ d = $221.19
The annuity could provide $221.19 each month
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Answer:
Step-by-step explanation:
We can let x and y represent the costs of packages of white chocolate chip and gingerbread cookie dough, respectively. Then the two sales can be represented by ...
11x +2y = 225
8x +10y = 326
__
There are several ways a system of equations like this can be solved. One of my favorites is to use a graphing calculator (see attached).
We can also use substitution. We see that the coefficients of y are simply related, so we can use ...
2y = 225 -11x . . . . from equation 1
8x +5(2y) = 326 . . . rearrange equation 2
8x +5(225 -11x) = 326 . . . . substitute for 2y
-47x +1125 = 326 . . . . simplify
799 = 47x . . . . . . . add 47x-326
17 = x . . . . . . . . . . . divide by 47
2y = 225 -11(17) = 38
y = 19 . . . . . . divide by 2
The package costs are ...
white chocolate chip dough: $17
gingerbread dough: $19.
