The GCF of 28 and 42 is .
A:2
B:4
C:7
D:14

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl