If the tiger has consumed 90 pounds of food in 10 days that's \( \frac{90}{10} \) = 9 pounds of food per day. The tiger needs to consume 135 - 90 = 45 more pounds of food to reach 135 pounds total. At 9 pounds of food per day that's \( \frac{45}{9} \) = 5 more days.

Jennifer scored 77% on the test meaning she earned 77% of the possible points on the test. There were 140 possible points on the test so she earned 140 x 0.77 = 108 points. Each question is worth 2 points so she got \( \frac{108}{2} \) = 54 questions right.

You have 24 out of the total of 400 raffle tickets sold so you have a (\( \frac{24}{400} \)) x 100 = \( \frac{24 \times 100}{400} \) = \( \frac{2400}{400} \) = 6% chance to win the raffle.

The absolute value is the positive magnitude of a particular number or variable and is indicated by two vertical lines: \(\left|-5\right| = 5\). In the case of a variable absolute value (\(\left|a\right| = 5\)) the value of a can be either positive or negative (a = -5 or a = 5).

To fill a 25 gallon tank exactly halfway you'll need 12\(\frac{1}{2}\) gallons of fuel. Each fuel can holds 2\(\frac{1}{2}\) gallons so:

cans = \( \frac{12\frac{1}{2} \text{ gallons}}{2\frac{1}{2} \text{ gallons}} \) = 5