Answer:
-7150
Step-by-step explanation:
7.15 * 10^-3
7.15 * (-10*-10*-10)
7.15 * -1000
-7150
-1/2 (t+3) -10 = -6.5
t = - 10
Price of 3 shirts=$18*3=$54
Price of 2 pair of socks=2*$3.99=$7.98
Price of a pair of slack=$45
Total amount- $54+$7.98+ $45-$106.98
Sales tax rate = 8.5%
8.5% of total amount-8.5% of $106.98=
(8.5/100)*106.98-9.0933
Total amount Rick paid=$106.98+9.0933=$116.0733
Regards
19.8 rounded to 1 s.f. is
20