4. In a sequence of numbers, az = 16, az = 32, 24 = 64, as = 128, and ag = 256. Based on this information, which equation can be used to find the nth term in the sequence,
an?

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Can someone explain to me how to do

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