What does the following description define?

a set of reference points, lines, and/or directions by which the position of any point can be described
a. distance
b. coordinates
c. speed
d. all of the above

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

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).