Anyone know the answer? much appreciate the

Yvaries inversely as x. y =12 when x=5. find y when x=4

Simplify the expression below -3(10x+4y)+6(6x-2y)

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample