Answer:
domain(-8. -2. 1 4
range( -10 0 10 0
and the the given exp is function
I think that she could buy 3 tubes of paint because that's $25.50 and that gives you 28.50 for the canvas.
Let
R = Ralph's age
S = Sara's age
First statement is translated as:
S = 3R
Second statement is translated as:
S + 4 = 2(R + 4)
Use the first equation to be substituted into the second one in terms of R which is the one we are actually going to solve for Ralph's age.
Since S = 3R, then
3R + 4 = 2(R + 4)
3R + 4 = 2R + 8
3R - 2R = 8 - 4
R = 4 years old
Add the two and you should get 2 and 7/16
