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x^2+3x-10=18
minus 18 both sides
x^2+3x-28=0
find what 2 numbers mutiply to -28 and add to 3
7 and -3
(x+7)(x-3)=0
set each to zero
x+7=0
x=-7
x-3=0
x=3
x=-7 and 3
Answer:
Step-by-step explanation:
each one gets 2 and their will be 4 slices left
53.55 / 85 = 0.63
0.63 * 100 = 63
63 - 38 = 25
watch was 25 before discount
