Answer:
S-8=9
or, s= 9+8
or, S= 17
Because 8 is in - so to become it's positive sign we should bring it to right hand side
All I know it that the pineapple costes $1.00
The first one is arithmetic with CD = -9.1 so the answer is B
Third one is D
Second question:
a1 = 648 and r = 1/3 so 8th term = 648 * (1/3)^7 = 8/27
30% off
theh shirt is 22.40 after discount
original=100%
original-discount=22.40
100-30=70%
22.40=70%
percent means parts out of 100
22.40=70/100 of original
multiply both sides by 100/70 to clear fraction
2240/70=original
32=original
original=$32.00
