Development and support services for a firms' business systems are provided by:
a. it standards services.
b. it management services.
c. it educational services.
d. application software services.

business modeling is correct

d) social security number

let me know if i am correct or not, so i can edit the answer.

hi : ) i found this so i hope this !

"we first find value of tax in dollars.

the difference between the two prices   is: 23. 54 - 22 = 1.54

therefore the sales tax in dollars is 1.54

the tax % will be   (amount of tax / original cost price ) × 100

(1.54 / 22) × 100  → (0.07) × 100 =   7

so the tax rate is 7%

we can double check the answer.

7 % of 22   → (7/100) × 22 → 0.07 × 22 = 1.54

22 + 1.54 = 23.54"

answerup to (3) three years;