7.  The area of triangle FGH is 21c
m
2
21cm2
. The triangle FGH is transformed using the matrix
(
4
1
5
2
)
(4512)
. Calculate the area of the image of triangle FGH.​

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?