F(x) = 5x
for f(7) you replace x with 7 so it will be : f(7) = 5(7) = 35
400 divided by 42 = 9.523809
Answer:
Ask brainly :)
Step-by-step explanation:
Total shells Sandy had = 5
Shells Mageret got = 3
Balance of Seashells
5 - 3
2
P is the principal amount, $5200.00.
r is the interest rate, 6% per year, or in decimal form, 6/100=0.06.
t is the time involved, 9....year(s) time periods.
So, t is 9....year time periods.
To find the simple interest, we multiply 5200 × 0.06 × 9 to get that:
The interest is: $2808.00