Which letter has rotational symmetry? a. h c. k b. j d. l

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

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