Oof I didn’t learn about this you can ask a class and go over it
Draw a number line number it with negative number on the left and postive numbers at the right start at postive 6 now go to the left twice your answer should be 4
Answer:
72
Step-by-step explanation:
x in (-oo:+oo)
(x/4)/3 = 6 // - 6
(x/4)/3-6 = 0
1/12*x-6 = 0 // + 6
1/12*x = 6 // : 1/12
x = 6/1/12
x = 72
x = 72
(6x^-2)^2(0.5x)^4 = (6^2)(x^-2(2))(1/2)^4(x^4) = 36x^-4(1/16x^4) = (36/16)x^(-4+4) = 9/4
90-20 leaves 70 for surfing. since surfing is 5 per hour, 70/5=14 hours she can surf.