2 / 707 = 0.0028288543140028
Answer:
Linear, exponential, and quadratic functions can be used to model real-world phenomena. ... Algebraically, linear functions are polynomial functions with a highest exponent of one, exponential functions have a variable in the exponent, and quadratic functions are polynomial functions with a highest exponent of two.
The formula for the future value of the account is
A = P(1 + r/n)^(nt)
where you have
A = 19909.20
P = 8975
r = 0.038
t = 21
The resulting equation is not one that can be solved by algebraic means, but we can use a graphing calculator to find n. This graph shows us n = 12, so
the interest compounds monthly.
It would be c because that is what goes
|x – 55| = 4.2
where x is the speed.
-4.2 < x - 55 < 4.2
-4.5 + 55 < x < 55 -4.2
50.8 < x < 59.2
The upper boundary for x is 59.2
The speed must be in the range 55 - 4.2 to 55 + 4.2.