One student burned a piece of paper weighing 4.8 grams. The table below shows the mass of the materials formed by burning the paper.

Material formed Mass of material (in grams)
Ash ?
Smoke 2.2
Dust 2.5

What is most likely the mass of the ash formed on burning the piece of paper?
0.1 grams
0.3 grams
4.6 grams
4.7 grams

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Which compound inequality could be represented by the graph?

Which expression is a factor of 12x2 + 29x – 8? x – 8 2x – 1 3x + 8 4x + 1