ISASP Mathematics 3

Question 1

If y = 3x – 5, what is y when x = 4?

Accepted Answer

7

Answer

y = 3(4) – 5 = 12 – 5 = 7.

Question 2

A triangle has angles measuring 45° and 60°. What is the measure of the third angle?

Accepted Answer

75°

Answer

The sum of angles in a triangle is 180°, so 180 – 45 – 60 = 75°.

Question 3

Which expression is equivalent to 5(x + 3)?

Accepted Answer

5x + 15

Answer

Using the distributive property: 5·x + 5·3 = 5x + 15.

Question 4

A table shows that for every 2 cups of flour, a recipe needs 3/4 cup of sugar. How much sugar is needed for 8 cups of flour?

Accepted Answer

3 cups

Answer

8 cups of flour is 4 times 2 cups, so sugar = 4 × 3/4 = 3 cups.

Question 5

On a coordinate plane, point A is at (2, –3) and point B is at (2, 5). What is the distance between A and B?

Accepted Answer

8

Answer

Since the x-coordinates are the same, distance = |5 – (–3)| = 8.

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