4x + 3 y = 20 2 x + y = 7 4x+3y=20 2x+y=7 if ( x , y ) = ( a , b. (x, y)=(a, b) is a solution to the system of equations above, what is the value of b b ?

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Which of the following represents the range of the graph of f(x) below