Answer:
-10.5
Step-by-step explanation:
2 x (-5.25) = -10.5
I would say 7,000,000,000,000,000,000,00,00,,0000,00
Answer:
520
Step-by-step explanation:
Past number of pupils: p
Increase of 57% = 1.57
Present number of pupils = 817
p x 1.57 = 817
p = 817 divided by 1.57 = 520.382
rounded to the nearest whole number = 520 (this is why the question says "about" how many...)