The appropriate choice is ...
D: Function 1 shows a greater rate of change, because Maddy spends $20 each month and Caitlin spends $18 each month.
_____
Each time the month number in Function 1 goes up by 1, the account balance goes down by $20. Each time the month number in Function 2 goes up by 1, the account balance goes down by $18. Once you have figured out that $20 is more than $18, you know the first two answers cannot be right. The third answer is wrong because Caitlin cannot (and does not) spend -$18 each month.
Answer:
-6
Step-by-step explanation:
Simplifying it the most gets it to -6
Answer:
$8.75
Step-by-step explanation:
Simple interest can be determined using this formula :
principal x time x interest rate
principal = $1400
time = 6 months = 6/12 = 0.5
interest rate = 1.25%
$1400 x 0.5 x 0.0125 = $8.75