Two hot air balloons are flying above a park. One balloon started at a height of 3,000 feet above the ground and is decreasing in height at a rate of 40 feet per minute. The second balloon is rising at a rate of 50 feet per minute after beginning from a height of 1,200 feet above the ground. Given that h is the height of the balloons after m minutes, determine which system of equations represents this situation.

A.

m = 3,000 - 40h

m = 1,200 + 50h

B.

h = 3,000 + 40m

h = 1,200 - 50m

C.

h = 3,000m - 40

h = 1,200m + 50

D.

h = 3,000 - 40m

h = 1,200 + 50

answer: 3 x 2 = 6 and 6+0

step-by-step explanation: sum equals addition and twice is multiplication so its

3 x 2 = 6

6+0= 6

identity property of zero

i'm pretty sure the second one is -4 and rational. the best way to solve is guess and check, or you may just know your multiplication facts really good.

-x represents miles per gallon

-y represents cargo weight

-vehicle traveled an average of 5.3 miles per gallon(x1) with load of 22 tons (y1)

- vehicle traveled an average of 6.3 miles per gallon( x2) with load of 18 tons( y2)

so, equation now becomes

so, option a) is correct