
Plug in

to find

.

would be

because

.
Use order of operations to solve.

Since

is the salary in thousands, multiply

by

.
A teacher can expect to have about $17,039 as a salary in the year 2020.
Answer:
58
Step-by-step explanation:
Answer:
Barbara's speed in clear weather is
and in the thunderstorm is
.
Step-by-step explanation:
Let
be the speed and
be the time Barbara drives in clear weather, and let
be the speed and
be the time she drives in the thunderstorm.
Barbara drives 22 mph lower in the thunderstorm than in the clear weather; therefore,
(1). 
Also,
(2).
(3).
,
and
(4). 
From equations (2) and (3) we get:


putting these in equation (4) we get:

and substituting for
from equation (1) we get:

This equation can be rewritten as

which has solutions


We take the first solution
because it gives a positive value for 


.
Thus, Barbara's speed in clear weather is
and in the thunderstorm is
.
Answer:
45
Step-by-step explanation:
5 times 5 is 25 plus 20 is 45 hope this helps