Factoring x² + 4x + 3 completely gives:
(x+4)(x+3).
(x-1)(x+4).
(x+1)(x-3).
(x+1)(x+3).
If -7 is added to half a certain number, the sum is -2. The number is:
-10.
10.
-5.
5.
The absolute value of -1 - 9 is:
-8.
8.
The product of 0.005 and 3.112 correct to 3 significant figures is:
0.0156.
0.016.
0.0155.
0.015.
In a certain room, the temperature at 6 a.m. was -7°C.
By 1 pm it has increased by -9°C,
The temperature at 1pm was:
-16°C.
2°C.
9°C.
16°C.
