A, b and c form a triangle where BAC= 90 degrees, AB= 13mm and CA= 9.7mm. Find length of BC

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

The area of a circle is equal to 1 dm². find the radius of the circle.

Given the functions, f(x) = 2x^2 - 1 and g(x) = 5x, find f(g(x)) and g(f(