What percent of 51 is 42? if necessary, round to the nearest tenth of a percent.
a)0.8%
b)45.2%
c)121.4%
d)82.4%

find the percent of decrease from 280 to 210. round to the nearest tenth of a percent if necessary.

a)133.3%
b)0.3%
c)25%
d)33.3%

Find the area of a square with a side length of 1/4 in.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?