Final answer:
Ava will earn $24 in interest after 6 months on her $1200 investment at a 4% annual interest rate.
Step-by-step explanation:
The question posed by the student is related to the calculation of interest earned on an investment over a certain period. In order to calculate the interest, we will use the formula for simple interest, which is I = Prt. Here, I represents the interest earned, P is the principal amount invested, r is the annual interest rate (in decimal form), and t is the time in years.
For Ava's investment:
- P = $1200 (the principal investment)
- r = 4% or 0.04 (the annual interest rate in decimal form)
- t = 0.5 (6 months out of 12, or half a year)
Plugging these values into the formula:
I = 1200 × 0.04 × 0.5
I = $24
Therefore, Ava will earn $24 in interest after 6 months.