Landen's front lawn measures 20 feet by 80 feet. He counts to find that there are 120 blades of grass per square inch. How many blades of grass are in the entire
lawn? Please show work.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

When is g(x) = 0 for the function g(x) = 5.23x + 4?