The answer x = 11 is correct for problem 4. Nice work.
Use this x value to find the answer in problem 5. From problem 4, we're told that Romeo runs at a speed of 5 m/s. If he runs for x = 11 seconds,then he runs a total distance of:
5*x =(5 m/s)*(x meters) = (5 m/s)*(11 seconds) = 5*11 = 55 meters
The answer to problem five is 55 meters
Answer:
Step-by-step explanation:

Add 5 to both sides

x = 6

Add 3 to both sides
x = -15 +3
x = -12
Answer:
r= −100c+100d/ct
Step-by-step explanation:
d=c(1+rt/100)
1/100crt+c=d
1/100crt+c+−c=d+−c
1/100crt=−c+d
= 
I believe it’s just 61/100