Answer:
4x-15
Step-by-step explanation
You just multiply -5 and -3 to simplify this.
45 + 32 + 37 = 114
114÷3 = 38
4 total quizzes,
for a 40 average on 4 quizzes she needs 40*4 = 160 total points
for 3 quizzes she has 45 +32 +37 = 114 points
160-114 = 46, she needs at least a 46 on the 4th quiz
Answer:
12.4 mg
3117.21 mg
1870.32 mg
Step-by-step explanation:
Answer:

Step-by-step explanation:

hope this helps
brainliest appreciated
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