Suppose someone spent the following amounts over several months, $640, $710, $700 and $685. What would be their average monthly expenditure? (Show Your Work)

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Step-by-step explanation:

First,

$640+$710+$700+$685=$2735.(total expenditure).

$2735÷4=$683.75.TOTAL AVERAGE.

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step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)