Find Sn for the given series:
a1=22
d=-8
n=21
a) 1911
c) -2436
b) -1449
d) -1218

Ac contractor is building a new subdivision outside of the city. he has started work on the first street and is planning on the other streets to run in a direction parallel to the first. the second street will pass through (-2,4) find the equation of the location of the second street in standard form. a.2x+y=2 b. x-y=2 c.2x+y=2 d. x+y=2

Name the most appropriate metric unit for each measurement

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?