B. -8
F(x) = -3x2 - 2x - 1
0 = -3x x 2 - 2x - 1
X= -8
The test predicted that Erin will not have a heart attack. The probability after the test was taken that she will have a heart attack is <span>0.4653. the rest of teh choices do not answer the question above.</span>
Answer:
B 1/y^3
Step-by-step explanation:
The negative exponent says move it from the numerator to the denominator
(If it were in the denominator we would move it to the numerator)
y^-3 becomes 1/y^3
9514 1404 393
Answer:
y = 2200(1.08^t)
Step-by-step explanation:
The interest earned the first year is ...
(2376 -2200)/2200 = 0.08 = 8%
The balances the remaining years are consistent with that interest being compounded annually. An appropriate function is ...
y = 2200(1.08^t)
_____
The compound interest formula is ...
A = P(1 +r/n)^(nt) . . . . principal P earning rate r compounded n times per year for t years
