The table and equation below show the proportional relationship between time, in seconds, $x$ , and distance traveled, in feet, , for two remote-control cars. Car 1

$x$ $y$
$15$$75$
$17$$85$
$21$$105$
Car 2
$y\ =\ 10x$

Which statement is true about the speeds of the two cars?

hi there!

question 1 answer: p/q can be terminating when q = 5^m * 2^n

question 2 answer: -1 and -1

question 3 answer: -4

question 4 answer: 5/12

hope this : )

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.