Write an expression for the model. find the sum.
a. 2 + 3; 5
b. 2 + (–3); 1
c. 2 + (–3); –1
d. –3 + 2; 5

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

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

One x-intercept for a parabola is at the point (-0.33,0). use the quadratic formula to find the other x-intercept for the parabola defined by the equation y=-3x^2+5x+2