Test number Industry standard software package Inhouse software package 1 354 323
2 327 322
3 341 308
4 390 332
5 373 316
6 386 324
7 301 326
8 356 322
9 653 335
10 370 342
11 307 316
12 342 326
13 384 345
14 379 338
15 363 333
16 364 336
17 313 322
18 336 320
19 390 351
20 373 332
Which of the three types of investigation discussed on pages 177–9
of Unit 4 is this? Explain your answer briefly.

Find an equation in standard form of the parabola that passes through (-2, 9), (-4, 5), and (1, 0)

How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

Panthers and leopards prey on deer in an ecosystem. for unknown reasons, the population of leopards increased drastically. what are the likely effects of this change on the species? 1. more food for panthers and more competition for leopards 2. less food and more competition for panthers 3. fewer deer and more competition for panthers 4. more food for deer and less competition for panthers and leopards 5. more food for leopards and less competition for panthers