Due by tomorrow —please help!

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Write the component forms of vectors u and v, shown in the graph, and find v − 2u. u= (< -3, -2> , < -3, -1> , < -2, -2> , < -2, -1> ) v= (< -5, 1> , -4, 0> , < 0, -4> , < 1, -5> ) v-2u= (< 5, 3> , < 0, 4> , < 4, 0> , < 5, -3>