Can someone please help Write an equation for these
y = mx+b
The first one is given:

Between 0 and 3 sec.
y = 30

Between 3 and 5.5 sec.

Between 5.5 and 7 sec.

Between 7 and 8.5 sec.

Between 8.5 and 9 sec.

Between 9 and 11 sec.

Between 11 and 12.7 sec.

Between 12.7 and 13 sec.

Taking algebra two apex courses and need with these questions

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x