Afriend has a 84% average before the final exam for a course. that score includes everything but the final, which counts for 30% of the course grade. what is the best course grade your friend can earn? what is the minimum score would your friend would need on the final to earn a 75% for the course?

Based on the information given the best course grade your friend can earn is 88.8% the minimum score would your friend would need on the final to earn a 75% for the course is 54%.

Best grade = (84%)(0.7) + (100%)(0.3)

Best grade=0.588+.30

Best grade=0.888 or 88.8%

Let final=30% of the grade

Let class work=(110%-30%)=70%

Let your friend minimum score =f

Hence,

70%(0.84) + 30%(final) = 75%

0.7(0.84) + 0.3f = 0.75

0.588 + 0.3f = 0.75

Collect like terms

0.3f=0.588-0.75

0.3f = 0.162

Divide both side by 0.3f

f=0.162/0.3

f =0.54 or 54%

Inconclusion the best course grade your friend can earn is 88.8% the minimum score would your friend would need on the final to earn a 75% for the course is 54%.

Learn more about minimum score here:link

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )