1/4 + 1/8 + 1/8 - how do u make this equal 3/4

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

15 points what is the end behavior of this graph? & what is the asymptote of this graph?