Jennifer scored 87% on the test meaning she earned 87% of the possible points on the test. There were 280 possible points on the test so she earned 280 x 0.87 = 244 points. Each question is worth 4 points so she got \( \frac{244}{4} \) = 61 questions right.

The equation for this sequence is:

a_n = a_n-1 + 8

where n is the term's order in the sequence, a_n is the value of the term, and a_n-1 is the value of the term before a_n. This makes the next number:

a₆ = a₅ + 8
a₆ = 33 + 8
a₆ = 41

To fill a 16 gallon tank exactly halfway you'll need 8 gallons of fuel. Each fuel can holds 2 gallons so:

cans = \( \frac{8 \text{ gallons}}{2 \text{ gallons}} \) = 4

To find the average of these 4 numbers add them together then divide by 4:

\( \frac{10 + 2 + 8 + 4}{4} \) = \( \frac{24}{4} \) = 6

To subtract these radicals together their radicands must be the same:

5\( \sqrt{50} \) - 3\( \sqrt{2} \)
5\( \sqrt{25 \times 2} \) - 3\( \sqrt{2} \)
5\( \sqrt{5^2 \times 2} \) - 3\( \sqrt{2} \)
(5)(5)\( \sqrt{2} \) - 3\( \sqrt{2} \)
25\( \sqrt{2} \) - 3\( \sqrt{2} \)

Now that the radicands are identical, you can subtract them: