## College Algebra 7th Edition

(a) $T=250-2x$ (b) 190 tablets (c) 125 days
(a) She starts with 250 tablets and takes 2 per day, so after $x$ days, the amount of tablets $T$ left would be: $T=250-2x$ (b) Using the formula with $x=30$, we get: $T=250-2*(30)=190$ tablets (c) We set $T=0$ and solve for $x$: $T=250-2x=0$ $250=2x$ $x=125$ So she will run out of tablets after 125 days.