What should be done to both sides of the equation in order to solve y - 4.5 = 12.2?

You are making a blueprint of your bedroom and you plan to use a scale factor of 18 . the actual width of your room is 14 feet and the actual length of your room is 16 feet. determine the width and length of your room on the blueprint. on the blueprint, your room will have a width of feet and a length of feet.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq