It costs the school band s s dollars per sandwich that they make. the band sells each sandwich for 2 0 % 20% more than it costs to make so they earn a profit. the expression 7 3 ( s + 0 . 2 s ) 73(s+0.2s) describes how much money the school band received selling sandwiches at their last fundraiser.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Add the fractions and simplify 1/2+ 1/3

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%