Remember
if |a|=b then assume a=b and a=-b
divide boths ides by -3
|2x+6|=4
assume
2x+6=4 and 2x+6=-4
minus 6 both sides
2x=-2 and 2x=-10
divide by 2
x=-1 and x=-5
2nd option
<span>F(x) = x + 3
y = x + 3
y - 3 = x
so
</span><span>F ^-1(x) = x - 3
</span><span>The zero of F ^-1(x) is -3
answer is
</span><span>-3</span>
Current volume = 10 glns
Miles he can drive currently = 28miles/ gln * 10= 280miles
Cost of gas= 1.40/gln
Function= s /1.40 *28 +280= 28s/1.40 +280=20s + 280
Final answer would be 20s + 280
14*5= 70
3*5= 15
70+15= 85
The answer for the first question is 85
