How to combine like terms

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.