Evaluate the expression for the given value of the variable. 7x+10 for x=34

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

The height, h, of a cylinder is 5 units less than 3times its radius, r. which expression represents the height of the cylinder in terms of its radius