3 + x(-2) = 10
step by step

Steps to solve:

3 + x(-2) = 10

~Simplify

3 - 2x = 10

~Subtract 3 to both sides

-2x = 7

~Divide -2 to both sides

x = -3.5

Best of Luck!

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function