Alia buys three erasers that cost $0.50 each, two notebooks that cost $5.00 each, and six pencils that cost $0.75 each. which expression shows how much money alia spent on supplies?

erasers = 3 erasers times $0.50 each = $1.50

two notebooks= $5.00 for one notebook so it must be  answer :$10.00 for 2

six pencils= 1 = $0.75 so if you do   6 pencils times $0.75 =   $4.50

working out (adding)            so if you the add all the $ it will equal to   $16.00

$1.50

$10.00

4.50

=$16.00

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)