1. $30; 20% markup

2. in math class there are 35 students. 2/5 of them have on a blue shirt. how many students don't have on a blue shirt?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?