Answer:9x6−156x5+664x4+176x3−620x2−48x+144
Step-by-step explanation:
Answer:
feldspar, because it has a higher number then gypsum and apatite, and it can be scratched by quartz because it has a lower number.
Answer:
9m^2+17m-9
Step-by-step explanation:
Answer:
$542
Step-by-step explanation:
we know that
The equation of a exponential decay function is given by

where
y is the value of the lawnmower
x is the time in years
a is the initial value
r is the rate of change
we have

substitute


For x=5 years
