Amass of 2.5 kilograms is placed on a horizontal frictionless surface against an uncompressed spring with spring constant 1130 n/m. the inclined portion of the surface makes at an angle of 30 degrees to the horizontal and has a coefficient of kinetic friction of 0.21 with the mass. the mass is pushed against the spring until it is compressed a distance 0.19 and then released. how high (vertically), in meters, does the mass rise from the original height before it stops (momentarily) on the inclined ramp?

(x+3) (2x-1)

so first, you want to combine the x's. to do this, count the x in (x+3) as 1. so the x's combined are equal to 3x. now, combine the 3 and -1. this expression simplified is equal to [ (3x+2) ]

ill do it for 100, also this isnt 80 its 40

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i just did this and got a 100.