These are the high temperatures for one week in July, Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
749
75°
80°
76°
75°
81°
78°
What is the mean high temperature for this week?
A. 74°
B. 75°
C. 76°
D. 77°
E 78°

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