As the administrative assistant in the provost's office, allie has to keep supplies stocked. she placed a stationary order for the office. she purchased 3 boxes of office paper for $89.97, pens for $43.96, and clips/rubber bands for $24.97. the total bill was $169.98. is this a reasonable amount if tax were added?

The total expense would be

Let x be the percentage of taxes: the expense after taxes would be

Which implies

So, she paid about 7% taxes, which seems quite reasonable

marco saved more.   he saved $35 more.

step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)