Answer:
2
+7x-15
Step-by-step explanation:
I presume f(x)=x+5 and g(x) =2x-3 and the question is f(x)*g(x)
f(x)*g(x)
(x+5)(2x-3)
distribute
2+10x-3x-15
2+7x-15
6 + .1 + .005
Hope this helps!
I know the answer is that x is less than or equal to 10b/(b-a) but how do I explain the fact that I had to switch the sign of the inequality?
Your answer will be -1 2/10, or -1 1/5 if you're looking for a simplified answer. My method is called KCF, or Keep Change Flip. First, you don't have to do anything with the -4/5. Next, you would want to change the division to multiplication. It is possible to just divide across, but changing it to multiplication is way easier and will save time. After that, you would switch -2/3 to -3/2. FLIPPING THE SECOND FRACTION DOES NOT MEAN THE NEGATIVE TURNS INTO A POSITIVE. Your answer would be 12/10, but we aren't done just yet. 10 goes into 12 once, now we have 1 2/10 left over. If you simplify you will get 1 1/5. So there you have it! I answered you question as best as I could and I hope this was helpful.
Answer:
It takes 72 years to get $5500.
Step-by-step explanation:
The amount in her bank account increases as she gets interest at a rate of 6.25% per annum.
Let A be the final amount , P be the principal amount , r be the rate of interest and t be the number of years taken.
A = P ( 1 + rt )
The final amount = $5500
Principal = $1000
r = 0.0625
Substituting the above values in the given equation,
5500 = 1000 (1 + 0.0625t)
t = 
t = 72 years.
It takes Holly 72 years to get $5500 amount from her bank.
