exam Maths Puzzle Numerical Ability

how do you write 194 x 10^3 in scientific notation?

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exam Other Question

Trying to find the domain and range for the function f(x)=eX
Both needs to be expressed in interval notation. The X following the (E) above should be typed as a exponent.
x - y = -5
2y = -2 - 2x

A(4, -1)
B(-3, 2)
C(-5, 2)
D(2, 5)
E(-2, -4)
FNo Solution

I need to graph this system of equations and state the solution. However, I dont need