We believe around 20% of students do. how many students should be sampled?

Katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

Acircle has a circumference of 28.36 units what is the diameter of the circle