Two cars drive from town a to town b at constant speeds. the blue car travel 35 miles per hour, and the red car travels 70 miles per hour. the blue car leaves at 10: 30, and the red car leaves at noon. the distance between the two towns is 140 miles. which linear equations represents the red car and the blue car?
a)red car y=70x
blue car y=35x+52.5
b)red car y=35x
blue car y=70x
c)red car y=70x
blue car y=35x
d) red car y=70x+105
blue car y=35x

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.