Which equation expresses the relationship between total distanced traveled and time spent

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

if x decreases by 4 then y increases by 10

step-by-step explanation:

answer for #1 is c

answer for #2 is d

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