The temperature of a chemical solution is originally 21 celsius. a chemist heats the solution at a constant rate, and the temperature of the solution is 75 celsius after 12 minutes of heating.
the temperature, t, of the solution in celsius is a function of x, the heating time in minutes.
write the functions formula
t=

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z