In Store A, you can buy 3 notebooks and a $2 set of pencils for the same
price as 4 notebooks. How much does
a notebook cost at Store A?
The equation 3x + 2 = 4x can be used
to find x, the cost of 1 notebook.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

Luisa sells stuffed animals. she sells her stuffed elephant for $34.90, and the sales tax is 6% of the sale price. about how much is the sales tax on the elephant?

If f(x)=3 over x+2 - square root x-3 then f(7)=