Which expression is eqivalent to 10c - 6c + 3 + 7d + 12 + 4d? a. 16c+11d+15
b. 7c+11d+12
c. 4c+10d+16
d. 4c+11d+15

Which one is true about the hexagons ?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?