Answer:
13
Step-by-step explanation:
7 x 2=14
40-14=26
26/2=13
12.5 * .25=3 1/8 miles running part
3.125 * .5=1 9/16 miles kayaking part
12.5+3.125+1.5625=17 3/16 miles total race
So you need to solve for the x and y values...I personally would use a graph. The is this website called desmos, it can help you with this kind of problem. You can see that the green point which is (10, 44) is on the line.. Lets check our work...
y = 4x + 4
44 = 4(10) + 4
44 = 40 + 4
44 = 44
This is your answer. I hope this helps love! :)
Four Hundred Ninety two thousand Fifty Three.