Luis Nunez begins walking at a rate of 4mph. Thirty minutes after he leaves, his wife, Kristin, realizes that Luis has forgotten his wallet, Kristin gets on her bicycle and begins riding at a rate of 24 mph along the same path that Luis took.
a) How long will it take for Kristin to catch Luis?
b) How far from their house will Kristin catch Luis?
a) How long will it take for Kristin to catch Luis?

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

step-by-step explanation:

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