A scale drawing of a lake has a scale of 1 cm to 40 m. If the actual width of the lake is 1,000 m, what is the width of the lake on the scale drawing?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

At his new job, jeremiah can choose an hourly rate of $9 plus a $50 weekly bonus for opening the store, or an hourly rate of $10 per hour with no opening bonus. the equations model his salary options. y = 9x + 50 y = 10x

What is the perimeter of square abcd? units units 28 units 37 units