Answer:
52.5 days
Step-by-step explanation:
Ten people can dig 2 acres in 7 days.
One person can dig 0.2 acres in 7 days.
Working at half the rate, one person can dig 0.1 acre in 7 days.
8 people can dig 0.8 acres in 7 days.
8 people can dig 6/0.8 * 0.8 acres in 6/0.8 * 7 days.
8 people can dig 6 acres in 52.5 days
57.50+4x=75.10
x=4.4
So she can use up to 4.4 gigabytes of data
-5
3x+7=-8
3x+7-7=-8-7
3x=-15
3x/3=-15/3
x= -5
6x^2 + 8x
the 2 is on top of x, so its squared
