Answer:
15 rides= 40 and r rides= 10+2r
Step-by-step explanation:
Step 1: Subtract 28x from both sides.
4x2−28x=28x−28x4x2−28x=0
Step 2: Factor left side of equation.
4x(x−7)=0
Step 3: Set factors equal to 0.
4x=0 or x−7=0
Answer:x=0 or x=7
Answer:
r=C
2π
Step-by-step explanation:
JDK-right triangle. JD=13, DK=3
By the Pythagorean theorem

JK≈13,34
Answer: the distance is 13 units
P.S. Hello from Russia