What is the answer to this? 8x + 25 = 78 10x + 48 = 100 20x + 5 = 100? Plz Help

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?