MATH SOLVE

3 months ago

Q:
# WILL GIVE *65+* POINTS AND BRAINLIEST TO WHOEVER CAN ANSWER THESE 3 QUESTIONS...: (LONG)Sadie and Nikhil are racing toy cars on several parallel line straight lined-tracks that start from a wall.Car A is places on the front track. The function A defined by A (x) = 30x+10 models the distance from the wall, in centimeters (cm) of Car A in terms of the time x, in seconds, after the car was placed.Car B is placed on the second track. The table gives the distance from the wall, in cm, of Car B for the first few second after the car was placed on the track. Assume Car B is travelling at a constant speed.Time Distance of Car B from wall (seconds) (cm) 0 51 302 553 80(Question 1)In this context, what is the best interpretation of the number 10 in the function A(x) = 30x +10?A. The speed, in centimeters per second of Car A 30 seconds after he car is placed on the trackB. The distance, in centimeters, Car A is from the wall 30 seconds after the car is placed on the trackC. The speed, in centimeters per second, of Car A at the moment the car is placed on the trackD. The distance, in centimeters, Car A is from the wall at the moment the car is placed on the track.(Question 2) How many seconds after being placed on the track will car B reach a point 105 cm on the wall?A. 4B.6 C.8D.12(FINAL QUESTION)Time Distance of Car C(seconds) from wall (cm)0 15 1 352 55 3 75 Car C was placed on its track at the same time as Car A. The table shows the distance from the wall, in cm, of Car C for the first few seconds at it was placed on the track. If Car C is traveling at a constant speed, after how many seconds will Car C be the same distance from the wall as Car A?A. 0.5B. 1C. 10D. 20

Accepted Solution

A:

Answer:1) D 2) A 3) AStep-by-step explanation:1) It doesnt have to do with 30 because 30 is combined with x not 10, this rules out A and B. x represents seconds so that rules out C. The only answer left is D.2) The car moves 25 cm every second and started and 5 cm. 25 times 4 + 5= 1053) Car C is moving at a slower pace than Car A so it won't be able to go faster, however it has a headstart because it is placed 15 cm from the wall at the beginning, not 5 cm. So Car A will be going faster but since Car C started further away, there will be a brief time where they are together.