(3<span> x $9) + (</span>3<span> x </span>$1<span>) = $27 + $3 = </span>$30<span>.</span>
Answer:
polygon must have 18sides
Answer: Keep the equal signs lined up, Even if you can do it your head, write it all out. If less than 4 inches of room, get out a new sheet of paper to do it on.
Step-by-step explanation: