Which value for a satisfies the equation 3 - 4(1 + a) = 7? a = -2 a = -6 a = 2 a = 6

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

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

It says factor each expression 49x-28?