A 150 W driveway light produces 9.3 × 104 J of light energy
over a 4.0 h period. If the light uses 2.06 × 106
J of energy in
the 4.0 h, then what is its efficiency?

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What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?