A. Let the Initial Interest rate = x
It is given that each month Interest rate decreases by 1/4 point. Let total change of rate over the last six month= y
y = 6 x -x/4
y = -1.5x
B. Total Change
= (-1.5x-x)/(6-1)
= -2.5x/5
= -0.5x
= -5x/10
= -x/2
Answer:
7%
Step-by-step explanation:
The additional tax is $0.42, we just have to find how much percent the tax ($0.42) is of the original cost ($6.00).
To do this, we can use the following formula:
Where x is the part (in this case, the tax ($0.42)), y is the whole (in this case, the original cost ($6.00)), and p being the percent (the tax rate in this case). We can replace the values in:
We can cross multiply and simplify to find the tax rate:
We're not done yet! We still need to turn it to percent. But we can do this by just multiplying our result by 100:
Place the percent sign and we are done.
Hope this helps.
Answer:y = negative 3 plus-or-minus StartRoot 5 x + seven-halves EndRoot
Step-by-step explanation: does this help??
<span>Since A an B are mutually exclusive, you can just add the two probabilities. Mutually exclusive means that one does not depend at all on the other.</span>