Which of the following is a result of shifting a circle with equation (x-1)^2 + (y-4)^2 = 16 up 4 units?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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