Hello!
Answer:

f(x) = 5x + 40
x = -5
Substitute the value of "x" into the equation:
f(-5) = 5(-5) + 40
Simplify:
f(-5) = -25 + 40
f(-5) = 15.
Answer:
what?
Step-by-step explanation:
0.7 is seven tenths.
Seven tenths as a fraction is 7/10.
Hope this helps!
The easiest way is if it doesn't need to be simplified. Multiply -2.105 by

. You get the fraction

. While this is technically the answer, you can simplify this down to

. Because 421 is a prime number, this can not be simplified any further. Therefore, the solution is

.

.