First let's solve for the rate, "b", by setting up a ratio with the two points given:
16.875/7.5=(ar^3)/(ar)
2.25=r^2
r=1.5
Now we need to solve for the initial value a using either point given...
7.5=a(1.5)^1
7.5=1.5a
a=5
So now we have solved for both variables and have a complete equation:
y=5(1.5)^x
Answer:
23/4
Step-by-step explanation:
The equation becomes 8x-7*2= 32
8x-14=32
+14 on both sides
8x = 46
divide by 8
x = 46/8
then simplify
x = 23/4
The interest should equal $990. First, you have to convert the rate per month into years, and then use the formula Interest=principal x interest per year x time in years
5.6 × 10⁷ × 1.05 × 10⁻³
= 5.6 × 1.05 × 10⁷ ⁺ ⁻³
= 5.88 × 10⁴
