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
Answer:
see explanation
Step-by-step explanation:
A linear function is a straight line so all you have to do is find a slope and a y-intercept
Answer:
-9
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
if x=23, 23-7=16
