Answer:
Step-by-step explanation:
f(-1)= -3(-1)+1 (you basically just sub in the -1 whenever you see an x. Therefore f(-1) = 3+1 = 4
Answer:
1
Step-by-step explanation:
Step-by-step explanation:
stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation