Please help me I will give brainliest. You need to use a^2+ b^2=c^2 format

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

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?