Answer:68.27%
Step-by-step explanation:
TI84
2nd distr
normalcdf(89,97,93,4)
10% is $8.00 so 20% is $16 and 80-16= 64 so the sale cost is $64.00
Answer:
2x+10=-8
x=9
3x=9
x=3
2x=8
x=4
4x=20
x=5