Domain:
-4 ≤ x ≤ 3
or in different form:
x ∈ [-4; 3]
What is 2 plus 2 add 14 subtract 6
2+2+14-6=
12
Avg. speed Joanna runs: 7.5km/h
how much she runs everyday: 15km
15km/7.5= 2 hours of running time everyday
She leaves at 8:30, comes back at ?
8:30+ 2:00= 10:30
Joanna arrives back at 10:30a.m.
To get the answer we have to tranform into y=ax+b form
-2x+4y=68 /+2x
4y=2x+68 /:4
y=

- its the result
13x+4y=284 /-13x
4y=-13x+284 /:4
y=

y=-

- its the result